Not receiving all email

I have mail forwarding set up in Gmail to forward to my Zoho mail, and at some point over the weekend I stopped receiving all of the emails. It is happening with multiple senders but the primary issue seems to be with my Weather Underground email forecast and Amazon receipts. I did try manually forwarding an email with this issue and never received it either in my Zoho mail.

This is not happening with every email from certain senders, only some of them. I am at a loss as to what could cause this.