an issue occurred when logging in "PROBLEM"

[Pepe9777x2]

I need help since I enter my username and password correctly but I get this error that says "an issue when logging in" and I have been like this for quite some time and I can't find a solution to this problem

[Hadi77KSA]

Check this: https://forum.plutonium.pw/topic/38171/how-to-reply-a-problem-with-plutonium-because-a-telecable-issue/2