iOS15 Text Message Forwarding - No Option in Settings
Regarding problems with syncing I've seen multiple people say to go into the iPhone Settings > Messages > Text Message Forwarding, but there is no option for this in iOS (screenshot below). Even Apple still refer to it in their help files, but that's not correct (well certainly not for iOS 15):
My imessages still don't sync properly between my MacBook and iPhone 12 (yes I've been through both to ensure all settings are correct).
Any other advice would be much appreciated.