- πΊπΈUnited States laryn
I'm working on something similar for the Stripe module for Backdrop CMS (which has incorporated this module's functionality into it). The direction I'm going is that if there is a zero/empty value for the payment amount, then it skips the credit card popup and just submits the webform normally. (This zero value could be provided by one option in a selection, the results of custom processing in the provided hook, etc. and makes an optional "pay what you can/want" functionality possible.)
I have a PR that is working in early testing on Backdrop. @joelstein, if you are interested I can probably submit a substantially similar patch here. Take a look and let me know if you think it's a good direction: