What steps will reproduce the problem?

create town
player has currency in their balance
player runs /t deposit 10
removes currency from players balance but doesn't add it to town bank

What is the expected output?

create town
deposit with /t deposit 10
town bank now has 10 currency in it

Towny version

0.101.1.12

Server version

Paper version 1.21.4-231-ver/1.21.4@09e9afd

Please use Pastebin.com to link the following files

1. Your full server startup from the logs\latest.log: https://pastebin.com/zVfwmWSA
2. Your Towny config.yml: https://pastebin.com/7iNTNQxX
3. Your townyperms.yml: https://pastebin.com/PLaDHG6K
4. Your log's error:(optional) If this is to do with permissions,
5. Your permissions file:

(optional) If this is to do with chat,
6. Your chatconfig.yml:
7. Your channels.yml:

As per the FAQ https://github.com/TownyAdvanced/Towny/wiki/Frequently-Asked-Questions CoinsEngine is known to not work.

CoinsEngine has something missing from their Vault implementation which is why it doesn't work.

You could ask the author to add support for VaultUnlocked, which doesn't require anything special to work with Towny.