How to disable the addition of numbers to the nickname in wordpress after registration?

Question

CMS

Hello.
When registering a user, 2 random numbers are added to the nickname, i.е. regetsya people with the nickname kolya, and after registration it turns out something like kolya68.
Registration goes through the UserPro plugin.
Wordpress version 4.9.4.
When registering through the standard wp-login form, there are no such problems.
Here is the code of the plugin file responsible for registration: https://pastebin.com/nFuXSbWX but I don’t see anything necessary there.

Answer 1

Hello!
VP has nothing to do with it. These are the features of the User Pro plugin A
quick google search turned up the result -
https://forum.userproplugin.com/forums/topic/numbe...
Check for conflict with other plugins or with the theme
Update the UserPro plugin to a newer version