VISA CARD

I’m not sure if this is the right place to get help but for some reason, my card randomly stopped working and every time I try to put it back in place it says I haven’t filled out the whole form as the shipping address isn’t complete but when I click on the shipping address it just disappears and I can’t get it to come back unless I quit and go back in but the same thing happens. See pictures below.

I've tried the below options and none are working.

I’ve tried to adjust the address just on its own and it let me adjust the address but still doesn’t work when trying to update the card.

I can’t remove the card as I have a subscription on the Apple account I tried to cancel the subscription to then remove the card but even when cancelled the subscription will not fully end until the 11th of May so still won't let me do it.

I've tried to add a different card to then update my main card but the address won't work either.

The few times I have managed to get through past the address (Not sure how I got through it) the page just loads and loads and loads and then times out. I'm really not sure what to do. I left it loading for over an hour. I’m so annoyed lol

My device is fully updated. I originally thought it wasn’t working because of this but even after updating it still wouldn’t work.

Ive also tried finding an email address for Apple support but I just keep getting back here. So if anyone knows a direct Apple support email please let me know.

I would really appreciate any help you can give.

Apologies for the long message.