Have to log in twice

When signing in i have to enter my log in details which then loads the screen

thank you for logging in $kint.......etc.

only to be sent back to the log in landing page again where if i sign in again it lets me in.

this happens everytime???

you got remember me checked??

Sounds a bit viral to me, I would scan for spyware

clear out all your cookies
logon and tick remember me

job done