personal folders from gmail not showing on iphone mail app but I can move them there

I am running IOS 7.2 on Iphone 12 pro.

All my personal folders are missing interestingly I can swipe on an email and then move it to a folder that doesn't appear. When I go to settings, select the account, advanced the archive folders shows under mailbox behaviors along with drafts ad deleted mail. when I tap archive mailbox, it shows archive on my phone and all the personal folders as on the server. Also the gmail label is greyed out.

How can I get the personal folders back on my iphone?

Thanks