Thomas
I've been using a Convoy S2+ nightly for a couple years and had no issues. It's working great for me.
You're welcome to use my backup UV light if you need it 'till you find something. Scorpions glow well but batteries (3 AA) only last about a week. I used Eneloops.
Are you using a filter for the s2+. If so what kind? I'm in Prescott valley