I feel like this is partly, if not mostly, a facilitation issue with the payment itself.

I signed up for Patreon to support one member, but its so easy to add/remove people to the monthly dole that I’m now up to $40/mo. I know you’re not asking for advice here but maybe something like that would be worth a shot if you haven’t tried already.

(I know that clientele though, so maybe Patreon isn’t the best route lol)