T-Mobile customers yesterday were eager to “get thanked” on the first T-Mobile Tuesday…perhaps a little too eager.

Following T-Mobile CEO John Legere’s appearance on the Good Morning America show Tuesday morning, traffic on the T-Mobile Tuesday app surged and created a logjam for customers trying to claim their free gifts.

According to commenters on Reddit’s T-Mobile page, a large number of users had difficulty accessing the app. Some customers reported receiving a server error message that read “This is awkward…It’s not your fault though. There was an error attempting to contact the server. Try refreshing the page.”

At around 10:30 a.m., T-Mobile took to Twitter to let customers know it was working on the issue. Legere also addressed the holdup via his Twitter account.

The problem appeared to persist throughout the day, with updates from T-Mobile and Legere in the late afternoon noting the problem was still being sorted out.

The backlog appears to have been sorted out by around 6:30 p.m. Legere said T-Mobile fixed the problem by adding “more capacity” to its system. As one user pointed out, the fix came just in time for customers to redeem their free pizza and frosty for dinner.

T-Mobile declined to provide usage metrics for the inaugural T-Mobile Tuesday.

Unveiled Monday, the T-Mobile Tuesday rewards program is just one element of the carrier’s Un-carrier 11 move. The latest move, which carried the theme “get thanked,” also included a stock giveaway to T-Mobile customers and a free hour of Wi-Fi for T-Mobile customers on all Gogo-enabled domestic flights.

As of Wednesday morning, the free T-Mobile Tuesdays app through which Un-carrier customers can claim their prizes was the number one free app in Apple App Store. The app was number 21 among free apps in the Google Play store.