iMessage and FaceTime still not working on 14 pro max

To activate iMessage and FaceTime using your Phone number

First, check to know whether you have an SMS plan enabled at least for One SMS with your carrier. Contact your Carrier (Cellular Service Provider) the agency that issued the SIM to you

If your iPhone is used with a carrier not found in the wireless carrier articles, make sure you can send and receive international SMS. (One SMS Only)

If you can't turn on or sign in to iMessage or FaceTime - Apple ...

I had this same issue. it showed my phone number checked, secondary was spinning, and my Apple ID checked. no one from the carrier support nor apple support could help. I decided to delete my secondary eSIM card. I did a reboot and reset network settings. a hour later it was active. I do not know if it is right, but that was the only way I could get it activated.