Invalid Login Session

I am losing it here…
I have created a tunnel… fine, it tunnels and I can access it via remote.[mytunnelsdomain.com] - all well and good
I now want to put a OTP on it, so I created a self hosted application called it whatever name and gave it the application URL of *.[mytunnelsdomain.com]
I go to my tunnel via remote.[mytunnelsdomain.com] and get asked for the OTP email, it sends me an OTP and I enter it and I get given a page that says
" Invalid login session. Please try going to the URL of your application."
doesn’t matter if I try a different browser or private session, I keep getting this?
What am I doing wrong???

Did you ever find a solution to this??