"Debugging and troubleshooting", "List of MyChat Client errors", " Error #0331".
 
Error

Error #0331: your application type is prohibited from connecting to the server
 

Error description

The user rights group with this account is not allowed to connect to the server from this device type.

 
Problem solution

In the Admin Panel, in the User permission groups, there is a section "Allowed OS to connect". You need to enable the item that does not give you the opportunity to connect (Android/Linux/iOS/macOS/Windows/WEB), or transfer the user account to the permission group where this rule is on.

 

By default, there are no special restrictions on connecting to MyChat Server from different operating systems.