Hi, no Developer options unavailable - #18 by aibd was not my issue. Before flashing my Pixel 8 I forgot to remove the password and to reset the device. My workaround was the following:
- reflash the Pixel with a Android 15 stock rom with Google Pixel - Update and Software Repair
- after that reinstall E/OS and then my issue was gone.
I got a full working Pixel 8 on E/OS now. Some apps do not work, for legal reasons. And the Esim function does not work properly for calls and texts. Data works. But that seems to be a known issue.