diff --git a/playbooks/verify.yml b/playbooks/verify.yml
index a683e77..4609e86 100644
--- a/playbooks/verify.yml
+++ b/playbooks/verify.yml
@@ -256,7 +256,7 @@
           - --proxy
           - "https://{{ megaproxy_services.https.endpoint }}:{{ megaproxy_services.https.port }}"
           - --proxy-user
-          - "{{ megaproxy_services.https.users[0].name }}:{{ megaproxy_services.https.users[0].password }}"
+          - "{{ megaproxy_services.https.users[0].name | urlencode }}:{{ megaproxy_services.https.users[0].password | urlencode }}"
           - "https://example.com/"
       register: authenticated_connect
       changed_when: false
@@ -269,9 +269,7 @@
     - name: Require successful authenticated HTTPS CONNECT
       ansible.builtin.assert:
         that:
-          - >-
-            authenticated_connect.rc == 0 or
-            'CONNECT tunnel established, response 200' in authenticated_connect.stderr
+          - authenticated_connect.rc == 0
         fail_msg: >-
           Authenticated CONNECT was not established. The curl output is hidden because it may
           contain proxy credentials; inspect the GOST service journal for authentication errors.
@@ -286,11 +284,12 @@
           - --fail
           - --max-time
           - "30"
+          - --proxytunnel
           - --proxy-insecure
           - --proxy
           - "https://{{ item.hostname }}:{{ megaproxy_services.https.port }}"
           - --proxy-user
-          - "{{ megaproxy_services.https.users[0].name }}:{{ megaproxy_services.https.users[0].password }}"
+          - "{{ megaproxy_services.https.users[0].name | urlencode }}:{{ megaproxy_services.https.users[0].password | urlencode }}"
           - http://api.ipify.org/
       loop: "{{ megaproxy_services.get('https', {}).get('routes', []) | selectattr('chain') | list }}"
       register: chain_entry_ips
@@ -308,11 +307,12 @@
           - --fail
           - --max-time
           - "30"
+          - --proxytunnel
           - --proxy-insecure
           - --proxy
           - "https://{{ item.chain.host }}:{{ item.chain.port }}"
           - --proxy-user
-          - "{{ megaproxy_services.https.users[0].name }}:{{ megaproxy_services.https.users[0].password }}"
+          - "{{ megaproxy_services.https.users[0].name | urlencode }}:{{ megaproxy_services.https.users[0].password | urlencode }}"
           - http://api.ipify.org/
       loop: "{{ megaproxy_services.get('https', {}).get('routes', []) | selectattr('chain') | list }}"
       register: chain_exit_ips
diff --git a/roles/https_proxy/templates/megaproxy-certbot-renew.service.j2 b/roles/https_proxy/templates/megaproxy-certbot-renew.service.j2
index 804460c..48d64f1 100644
--- a/roles/https_proxy/templates/megaproxy-certbot-renew.service.j2
+++ b/roles/https_proxy/templates/megaproxy-certbot-renew.service.j2
@@ -5,5 +5,5 @@ Requires=docker.service
 
 [Service]
 Type=oneshot
-ExecStart=/usr/bin/docker run --rm --network host -v /etc/letsencrypt:/etc/letsencrypt -v /var/lib/letsencrypt:/var/lib/letsencrypt certbot/certbot:{{ megaproxy_services.https.certbot_version }} renew --quiet
+ExecStart=/usr/bin/docker run --rm --network host -v /etc/letsencrypt:/etc/letsencrypt -v /var/lib/letsencrypt:/var/lib/letsencrypt certbot/certbot:{{ megaproxy_services.https.certbot_version }} renew --cert-name {{ megaproxy_services.https.endpoint }} --quiet
 ExecStartPost=/usr/bin/systemctl try-restart megaproxy-gost.service
diff --git a/tests/test_https_proxy_role.py b/tests/test_https_proxy_role.py
index a90e349..fd320a0 100644
--- a/tests/test_https_proxy_role.py
+++ b/tests/test_https_proxy_role.py
@@ -119,3 +119,47 @@ def test_docker_cleanup_runs_after_docker_service_changes() -> None:
     assert "cleanup_old_images gogost/gost" in cleanup
     assert "cleanup_old_images certbot/certbot" in cleanup
     assert "megaproxy_services.https.certbot_version" in cleanup
+
+
+def test_verify_curl_preserves_percent_encoded_credentials():
+    import base64
+    from http.server import BaseHTTPRequestHandler, HTTPServer
+    import subprocess as sp
+    from threading import Thread
+
+    tasks = YAML(typ="safe").load((ROOT / "playbooks/verify.yml").read_text())[0]["tasks"]
+    probes = [task["ansible.builtin.command"]["argv"] for task in tasks
+              if isinstance(task.get("ansible.builtin.command"), dict)
+              and isinstance(task["ansible.builtin.command"].get("argv"), list)
+              and "--proxy-user" in task["ansible.builtin.command"]["argv"]]
+    assert len(probes) == 3
+    assert all("--proxytunnel" in probe for probe in probes if "http://api.ipify.org/" in probe)
+    user = {"name": "test%2Fuser", "password": "test%C2:pass%40word"}
+    variables = {"megaproxy_services": {"https": {"users": [user]}}}
+    env = Environment(undefined=StrictUndefined)
+    credentials = {env.from_string(probe[probe.index("--proxy-user") + 1]).render(**variables)
+                   for probe in probes}
+    assert len(credentials) == 1
+    received = []
+
+    class Proxy(BaseHTTPRequestHandler):
+        def do_GET(self):
+            received.append(self.headers.get("Proxy-Authorization"))
+            self.send_response(200)
+            self.end_headers()
+
+        def log_message(self, *args):
+            pass
+
+    with HTTPServer(("127.0.0.1", 0), Proxy) as proxy:
+        proxy.timeout = 5
+        worker = Thread(target=proxy.handle_request, daemon=True)
+        worker.start()
+        result = sp.run(["curl", "--silent", "--show-error", "--fail", "--max-time", "5",
+                         "--noproxy", "", "--proxy", f"http://127.0.0.1:{proxy.server_port}",
+                         "--proxy-user", credentials.pop(), "http://example.invalid/"],
+                        capture_output=True, text=True, timeout=10)
+        worker.join(5)
+    assert result.returncode == 0, result.stderr
+    expected = base64.b64encode(f'{user["name"]}:{user["password"]}'.encode()).decode()
+    assert received == [f"Basic {expected}"]