TMobile Tues Days app sends 6 digit verification code but verification needs 4 digit code

I tried to get into my T-Mobile Tues day app account and they send me a verification code.  They sent me a 6 digit code but the app will only take a 4 digit code.  So I cannot get into the app.  I was going to use the free one night Redbox and the Lil Cesars pizza promotion but I couldn’t get in to redeem them.