Previously, when it was a PCR & ATK (I did that version in Dec 2021), you were supposed to upload the ATK to Mor Chana, but there was no functionality to do that, so no-one knew what to do with them. They managed to add that for the Day 5 PCR, so it seems likely they will use it for the Day 5 ATK, but it's too early to know for certain.
If you took your ATK yesterday, then you are on Day 6 now, so you will have to wait another couple of days to see if the notification comes through on Day 7 or 8.
The Mor Chana app used to turn green after the Day 1 PCR test. Now it stays orange until the Day 5 results are uploaded.
I've never had the PCR tests get added to Mor Prom under any variant of Test & Go. You do have Mor Chana installed, not just Mor Prom? You will only get the notification in Mor Chana (if you get one at all).