How can i change acc?

Question

There are two accounts: first this and another an acc in which i can't enter. When I trying to add acc, Sololearn writs to me next text:
"Sign up failed
This account is already connected to another user"
I am the only owner of this acc.

Answer 1

Yikes. Sounds like a technical problem (or you got hacked). Either way, reach out to SoloLearn at [e-mail].

Answer 2

Is someone needs my acc?

Answer 3

Dunno. There's a good way to find out though (as recommended earlier).