Invalid Credentials when trying to log in

I have attached a picture of the error message i got .

katolon team, kindly help me fix this bug i have been having for more than 2weeks now, after entering my registered email and password then clicking on the activate button, app loads and pops up again stating"invalid credentials" and then sometimes it loads for a long time and pops back again with the cursor on the activate button. kindly help me with solutions


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