If you are using an adblocker like uBlock, AdBlockPlus, or some other plugin then you need to disable it. It seems whoever maintains the lists recently updated it to block scripts used by Tmobile's sites.Otherwise, right click -> inspect (on Chrome/Chromium) or right click -> Inspect Element and click the Console tab at the top of the window that opens on the bottom (Firefox/Pale Moon) and look at the console to see what errors are showing up. That will be helpful for developers to fix the site. 😉____As for tmobile: you should let your devs know the site is being blocked by blocklists so they can find workarounds for something as critical as payments. If you are running tracking analytic code then it shouldn't be coded in a way such that the page doesn't load.
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