It took me a second to understand what you were saying, but I think I understand.

If I may try and quote you:

"My Husband and I live apart from one another and do not share the same account.
If you would like to purchase his art, please pay him and not me.
If the money is sent to me, it does not help him at all."

I think that is what you were going for.

Thank you for advice
I rewrote it like that

Happy to help!