Forgot to close lid

I started going to the tanning salon for the first time in my life this week. I’m dealing with some psoriasis and heard it could help. Anyway, I had no idea what I was doing, the ladies didn’t explain much even though I said I needed a walkthrough. I did a session on Tuesday and then another today and on my way out saw someone closing their tanning bed…. Which I hadn’t been doing lol. Just left the lid up where it was, kind of a clamshell.

Am I going to get ANY of the sun exposure benefit I was looking for? Or did I completely waste $50….. I’m such an idiot.