Don't worry it happens sometimes. The good news is the activation process is still happening behind the scenes, but it takes a bit longer. Just follow the instructions below:
1. After about 15 - 20 minutes, go to Settings and tap Mobile (or Cellular).
2. Under the SIMs list, you will see your Primary number and your new eSIM will be located either under Business or Secondary or possibly Travel.
If you want, you can rename your new eSIM.
3. Go to Mobile Plan Labels - and tap Mobile Data.
4. Tap the new eSIM which may be labelled Business or Secondary or Travel.
5. Hit Custom Label and name it something like "Cedar Mobile" (helps to have different name). Tap Done.
6. Next go to Default Voice Line and choose Primary. Tap Continue.
If you want to have iMessage and Facetime:
7. Then go to iMessage & FaceTime and turn ON, also pick Primary - yes, (only if you use them). Tap Continue.
8. Under Mobile Data, your shiny new Cedar Mobile eSIM will be listed.
9. When you see Mobile Data Switching - resist the urge! Leave it OFF. Tap Done.
10. Your phone may still be doing a little behind-the-scenes setup, so give it a few minutes to fully connect.