hooks.stripe.com failure when adding a credit card payment
I'm unable to add a credit card as a payment option.
I've tried several different credit cards on several different apps and it's always the same behaviour, so the problem seems to be either with my device or my apple account.
Everytime, after I input my CC details, there's a pop-up window with a completely white body and the address "hooks.stripe.com" at the top (apparently stripe.com is some kind of payment infrastructure website --nothing to do with the app I'm using).
There's no error message, no activity, etc. Eventually I just have to tap on "Close", and then it says "Something went wrong", Please try again or consider using another payment method". There should be some clue what the problem is, but unfortunately, this completely blank white screen is all I have to go on.
The only other clue (based on other problems I've had) is that maybe "javascript is off" --I have no idea what that means, how I would check whether or not such a thing is indeed "off", or not, or how to turn it back "on". Super frustrating, and I don't even have an error message to google, so I'm pretty much at a dead end.
iPhone SE