Upgrade Plan issue

[#1]

Hello, I tried to upgrade the plan, and every time I click on upgrade and  pay button shows  (Sorry, something went wrong on our end. Please refresh the page and try again. If this issue keeps happening, contact customer support.) 

[#2]

Hi Basel,

Could you please try using a different browser or the incognito mode of the current one? You may also clear your cache and cookies. Then, log back into your account and process the upgrade. Let us know if the issue persists with a screenshot of what you can see from your end; we'll look closely into that for you.