g suite not receiving email notifications

I have followed code queen tutorial on how to do email notification on my custom made submission form.
It was working then all of a sudden it doesnt work im not getting any notificiation emails to my g suite mail. However, I do get email notifications to my private email address and gmail address.

Please advise as this is a project for work and would like to get it to work asap for my deadline.
Please advise

maybe check your spam

I have checked my spam box … the emails are not there …any suggestions

Please could anyone help me even someone form wix … which i did try and contact wix support they were prompt in answering my question however everything they suggested i have tried and in the end they said to post on this forum and someone will be able to help me