• Your Rocket.Chat Experimental app version: 4.0.2.2087
• Your Rocket.Chat server version: 2.1.0
• Device (or Simulator) you're running with: One Plus 6

Using the current experimental version of the app available in the Play Store I cannot connect to our server, which is behind a login with user password configured via .htaccess.
The URL I enter in the connection part is https://username:[email protected]

The error I get after trying to connect is: The URL you entered is invalid. Check it and try again, please

If I see it right, currently the regular expression for adding a new server does not accept http basic auth to be included in the URL.

The following regular expression
(https?:\/\/)?((.+?):(.+?)@)?(((\w|[0-9-_])+(\.(\w|[0-9-_])+)+)|localhost)(:\d+)?$

is accepting a URL with user and password information (e.g, https://username:[email protected])
Hope this helps