Stuck in restore of Whatsapp chat history on my new Iphone 14 – what happens when I press next.

Hi Apple community. I’m somewhat desperate. Got stuck here when restoring my Whatsapp chats on my new iPhone 14. And now I don’t know what to do now. I have good wi-fi, the right number connected and so on. Followed all the instructions. Anyone here who ended up in the same place?

Also, can I shut the app down and restart the phone. Anyone knows what happens then?

How do I keep the latest backup in Icloud so that it doesn't back up an empty app?

So many questions...

Please help!