I can't Login in my Main Account

I recently installed Crossfire, after having stopped playing for a few months. But I could not log in to my Main account.
I put my data and the following appears (attached below)
I click OK or the Cross and it appears again for me to put the Data of my Account. Then the Terms and User Usage Screen appears again.
This is an Infinite Loop.
I recently created a second account and I can enter the account perfectly, so the problem is not in some installation error, but in my main account.
I sent a Ticket to Riot but I only got an Automatic response a week later, without helping me at all.