L2 EAD Phoenix Lockbox -No receipt and no check cashed


I have mailed my forms originally on Dec 4 and it was returned back due to incorrect fee.

I have reposted the same back again and it was delivered to Phoenix lockbox on Dec 28 and I did not receive any text alerts/emails or post yet.

I am worried as most of users here gets emails/text in a few days after the packet has been mailed.

Is this delay normal? What is the typical timeline for check encashment or receipt number generation ?