Hi.
They a tiny novelty light. take them as such.
You want more light. Like me. Buy bigger.

There is ALWAYS stronger torches of same size.
Than the ones you buy at that time.

I have 5 x AO1. Beautiful torches in my eyes. and I usually run them on mid.
I want any brighter. I usually have a C8/C8+. Astrolux S41s. Imalent DN 25/70.
Plus another half a doz. You wait.

My first AO1 dropped out after around 2 yrs in pocket use.

Dropped it a coupla times. Plus a dash of electronic cleaner up the bottom?.
It now works again. Naxt door 5 yr old loves it.
But sometimes It runs at a lower rate than it should at all settings.

It’s a $7.50 toy. Treat it as such.
Their torches, with Convoy and Sofurn, plus a few others.
ARE great value for money. for lower market pricing items.
with very FEW problems overall.

My $56k Patrol had A problem in first month. (Assembly/QC. inattention)
So did my $45k D-Max Ute.
But they ran faultlesly after that for a lot of yrs.
And we won’t even start on the money I spent on my second hand 42ft yacht to get her right after purchase. $127K to buy, plus another $32+K to get as I wanted her.
And that was before I even took her out for her first sale as the owner.

Principal here.
ANYTHING can have problems. Just accept and get on with it.
Buy another 3 or 4. One will work. chuckle. I Love them.