I am just replying for the rest of the people that have the same issue since there is no solution from the Team Support.
If you have the same problem, stop using the “Connect to Discord” button as a login/signup mechanism. This plugin ( in my opinion ) should be used only ONCE by the user ( I recommend on checkout ). If you use the “Connect to discord” button as SSO with discord, every time that a user is logging in the plugin, takes back the Discord Role, After minutes it gives it back ( it might never give it back )k, send a welcome message to the user. Since the team is not checking if the user is already registered with correct roles, they spam with API requests.
I hope it helped someone.