If you go to the site through chrome on android v7 and click add to cart, it gives an error, there is no incognito, why?

Question

InstantCMS

If you go to the site with adndroid v7 from your phone, and click add product to cart, it gives an error "invalid request", and if you go from incognito mode, everything works. I checked it on different devices, but it is on andorid 7 and only in chrome that it gives this error. I've been dealing with this problem for 3 days now. Help me fix it please