Pages aren’t being crawled

Since the update I have experienced several issues with Google crawling the website. My google ad got deactivated because it was being blocked and also when I look at the pages crawled, it is telling me that none of the pages including the homepage can be crawled. This was all working fine prior to the update to the latest version.

I will need to revert back to the previous version but please advise what I may need to do so that I can start using the latest version instead?

Website address – https://snipboard.io/mjIdCa.jpg