diff --git a/public/v4/apps/plausible.yml b/public/v4/apps/plausible.yml
index 5d4f139..45cc8d9 100644
--- a/public/v4/apps/plausible.yml
+++ b/public/v4/apps/plausible.yml
@@ -89,7 +89,6 @@ caproverOneClickApp:
         - description: This is the username for logging into the SMTP host. Please change it according to your host.
           id: $$cap_RELAY_USERNAME
           label: RELAY_USERNAME
-          validRegex: /^([^\s^\/])+$/
         - description: This is the password for logging into the SMTP host. Please change it according to your host.
           id: $$cap_RELAY_PASSWORD
           label: RELAY_PASSWORD