Create a custom slug with a (.) period for redirecting to app-ads.txt file

Site URL: https://www.81monkeys.com/

I'm attempting to put our app-ads.txt (similar to ads.txt) on our site for our mobile app. Sadly Squarespace does not allow or support adding files to the root directory. This is a huge problem for app developers! I've found a work around, where you basically, upload the file to a page, find the unique URL for the file, and then redirect to the file by creating a page with the slug app-ads.txt. The problem with this solution is that Squarespace does not allow me to make a slug with a (.) period in it. Does anyone have a solution to this problem? Thanks!