AMP Error (Website is generating multiple AMP URLs)

Site URL: https://www.thejub.com/

Can someone please help point me in the right direction or have a suggestion on why my website generated additional AMP url's this last month? No one seems to be able to understand why this happened or how to fix it (Squarespace or Ezoic).  

Before the change/error, we had our main url and regular AMP url which worked out great. Sometime in late February/early March we saw a dip in traffic and after reviewing analytics, noticed that there were additional AMP url's (extremely long) that were generating traffic from the website. 

This happened to a bunch of our pages - here's an example url. https://www.thejub.com/millennial-career-resources/jobs-that-pay-the-most-without-a-degree-good-paying-jobs-no-education?back=https://www.google.com%2Fsearch%3Fclient%3Dsafari%26as_qdr%3Dall&as_occt%3Dany&safe%3Dactive%26as_q%3DBest%20jobs%20without%20degrees%202021%26channel%3Daplab%26source%3Da-app1%26hl=en&format=amp

Something common we noticed across each of these long urls was (?back=https://www.google.com%2Fsearch%3Fclient%3Dsafari%). You can also see from the attached image that Google pulls this "support.google.com" result ahead of my original AMP url. 

I've added the three URL's below with an image I pulled from the Google AMP tool to help paint a picture of what I'm seeing. Someone mentioned to try and clear the AMP cache but I was told I'm not able to do that through Squarespace. 

Any help or thoughts would be greatly appreciated! 

Original URL: https://www.thejub.com/millennial-career-resources/jobs-that-pay-the-most-without-a-degree-good-paying-jobs-no-education

AMP URL: https://www.thejub.com/millennial-career-resources/jobs-that-pay-the-most-without-a-degree-good-paying-jobs-no-education/format=AMP

Additional/Unknown AMP URL: https://www.thejub.com/millennial-career-resources/jobs-that-pay-the-most-without-a-degree-good-paying-jobs-no-education?back=https://www.google.com%2Fsearch%3Fclient%3Dsafari%26as_qdr%3Dall&as_occt%3Dany&safe%3Dactive%26as_q%3DBest%20jobs%20without%20degrees%202021%26channel%3Daplab%26source%3Da-app1%26hl=en&format=amp