You can get a refund within a certain period (30 days?) of signing up.

If it was going to, they’d probably just reduce the size again.

I believe they offer refunds if you cancel within 30 days.

Rather than a text file, using a command snippet manager like pet might be more convenient.

Press and hold the power button when they’re turned off. They should enter pairing mode a few seconds after powering on if you keep holding.