You should have an account on https://www.einvoice.nat.gov.tw if you use digital receipts.
There you can set up automatic payout to a bank account.
I also linked some services to automatically use my digital receipt account there. e.g. pchome, wemo, easy card
Some other services just ask for your ‘Mobile phone barcode’ to associate the digital receipts. e.g. GoShare
This has some info on it:
https://www.translatingtaiwan.com/2020/05/07/digital-receipts-in-taiwan-and-lottery-winnings-to-your-bank-with-an-alien-citizen-digital-certificate/