Apparently I was given a 30 day shapr3d pro free trial but I don't even have app on my ipad anymore. Will I be charged at end of trial? I can't see any option to cancel. Any help appreciated.

I downloaded the shapr3d app on my iPad over a year ago. I never agreed to any subscription of any sort, nor to any payment. However, I recently saw an email saying that my 30 day free trial of the pro version was coming to an end soon. When I looked at my account on their website, it says I was gifted the trial. I can't find any option in my account on the website to cancel the subscription. I also can't see any subscription listed on my Apple profile on my iPad. I don't use shapr3d anymore and I want to make sure I will not be charged anything when this gifted trial comes to an end. Before I saw the email I never even knew that I had it, and I definitely never signed up for it. Any help in resolving this appreciated.