Hello, I'll attempt to resolve this issue.
Many times on websites they have enabled additional security to prevent certain stuff getting hacked.
Please wait a little more(15 minutes approximately because every 5 times you attempt a login it may decline all logins to prevent accounts getting hacked).
Then try again.
If it didn't work please check on the actual website to make sure you aren't banned.
Also you MUST enter username,password, and the capatcha every time you attempt to login.
If you need more help, please PM me or add my Skype- avaisbest .
Thanks, hope I've helped you!