So having several times even backed up my WhatsApp history chat backup and I tried to restore it it's not judging
See info below ok Google drive
WhatsApp backup
Your chats and media (including photos, videos, audio and documents) are backed up on Google Drive. If you change devices, you can restore them when you reinstall WhatsApp.
I don't get it at all so mranjg even if I change my device which I have since S10+ to July to s21+ same thing it's such a nuisance
If you have a whatsapp backup on the main Google drive account, i would reset the app and give the permissions. Then restore it from the backup. It has to be done at the very beginning or you have to start again. Hope this helps 👍