This works for me (animal crossing):
The message "Can't allocate a free WBFS block" means, that the patching process requests a new block. But domain patching does not expand the game. Can you send me your test.wbfs for further analysis?
EDIT: I found such file
Code:
# wit edit a.wbfs --http --domain example.com
***** wit: Wiimms ISO Tool v3.04a r8428M x86_64 - Dirk Clemens - 2021-04-20 *****
wit: EDIT WBFS:a.wbfs/#0
EDIT: I found such file