Instead of minutes if you add the $10 global calling card to cart you can then add the $49.99 add-on from bottom and deselect the calling card and just have the $49 add on in the cart.
I usually disable uBlock Origin but still sometimes have problems with the site (esp with FF).
But doing that (or disabling whatever content blocker), setting tracking protection to standard, clearing cache and cookies, fixing any password issues can sometimes help with site issues. Seems there are also times when nothing really helps and its difficult to even login.
The app can be very helpful/useful since it seems to work a little better (especially with changing account info) and can do things like send plans bought with points to friends (iOS version of app) and doesn't usually get all the errors.
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