Sorry to post in aibu, but I need an answer to this, and hopefully quickly!
Got a new phone in June. Stupidly didn't back up my WhatsApp messages before setting up new phone (new network but transferred old phone number).
New phone only has messages from June. Old phone shows messages prior to June when I open the app, but pops up with a message about the number no longer being registered (or something) and I can't get past it to get to the messages.
Is there any way I can retrieve these old, non-backed up messages?! If I reactivate WhatsApp on my old phone, will I be able to access the old messages, or will they disappear as back up was obviously set to off?!