Unable to login to My T-Mobile Account

I recently switched from a prepaid to postpaid account.  After signing up for the prepaid plan, left the store and went home, registered on T-Mobile, and was able to see account information, it was limited because it was new, but I was able to sign in.

A couple of weeks ago when I switched to the postpaid account, the rep told me that the account number did NOT change, since they were doing a conversion from prepaid to postpaid.  While in the store, I got an email stating that the prepaid account had been deleted. 

After the rep had me all setup and ready to go, I left the store and went home, tried to re-register account and received the following error:  "Something's not right.  Lo sentimos, debido a una altísima demanda, esta página no está disponible por el momento.  Mientras nos apresuramos a resolverlo, marca 611 desde tu teléfono T-Mobile.  Call now 1-877-778-2106."

I called the number, talked to rep and then was connected to Tech Support who created a trouble ticket, and told me someone would get back to me, which they never did, even after 3 days, so I called back on 11/21/18 and talked to another rep who stated that I should wait until 11/26/18 and try again, which I did and still received the same error as above.

Called T-Mobile back on 11/26/18 and talked to another rep and she stated that the error I was receiving was a known issue affecting multiple users but had since been correct, and that the ticket that had been created from my previous call had been closed, because the issue had been corrected.

I told the rep that I am still receiving the error when I try to log in, I've already cleared the cache on my phone, as well as Internet browser, I've deleted the mobile app and re-installed it and still I am not able to log into my account on mobile device or from a desktop computer.

This is very frustrating and I feel like I’m gonna have to call every 3 days to get update or to open a new ticket. 

I kept the same mobile number and email address from the prepaid account but I feel like the issue is related to the prepaid registered account that was deleted.

It has been two weeks since I switched to the postpaid account and I manage all of my Business accounts online and the rep said it shows me registered in the system so this does make me wonder what I’ll have to go through with any future issues.

So far I’ve been given all of the standard, scripted responses, and solutions but I still can’t log into my account through the mobile app or on a desktop computer.

Waiting on response from T-Mobile.