Email help for my SaaS Product

Not sure where else to post this.

I accidentally changed my Nameservers but immediately switched them back to the previous settings. I deleted my Google Verification TXT record and now my email doesn’t work. My domain is still verified in my admin account.

The nameservers are on Namecheap and the project is hosted on Vercel. The gmail mx records are still intact on Vercel and the site is live. However, email does not receive messages but is able to send to accounts.

I asked Stack Overflow and looked everywhere. I even submitted a ticket to google help but haven’t heard back.

Does anybody have any suggestions on where to look? Thanks everybody!