Check your master gain level or batteries.
I see issues with batteries often. Which brand are you using? Have you tested other brands to be sure it's not due to the battery?
Some batteries aren't designed for high-drain devices, so when you start to strum and the voltage starts to rise, they'll cut off.
If it's a Carbon Zinc battery, it will not be able to carry a heavy load for a long period of time and you'll have this issue.
These issues are almost always a simple fix. Reach out to me through a support ticket and I'll reach out to help you with it.
Bad batteries account for about 80% of my support. They are the bain of my existence. :)
Low battery thresholds are:
You can use 1.5V batteries if you prefer. I've heard good things about the EBL 1.5V, but the Eneloops work perfectly for my needs.
Those are good batteries! Now you shouldn't have any more issues.
Enjoy your TWA!