I tried to install a donate app and it has now stuffed up my product page! I deleted the app. But now when you click on each products in my store it goes to a page can’t be found error. So customers can’t find out more info about the product or purchase anything! Can someone please help? Thank you.
Sorry you are facing this issue, it would be my pleasure to help you.
Welcome to the Shopify community! 
Thanks for your good question.
Please share your site URL,
I will check out the issue and provide you a solution here.
Greetings, @Pormpuraawart .
Thank you for reaching out and bringing this to our attention!
I understand that there’s an issue with the product page after uninstalling/deleting the donation app. Just to confirm, did the donation app require you to install any coding to your theme?
If so, then you can try rolling back to a previous version of your theme files. However, in order to do this, you will need to be able to identify the file that was previously modified.
If rolling back the theme doesn’t resolve the issue and you’re not sure where the issue is coming from, then the app developer is always available to assist you. You can reach out to the app developer directly through the contact information found in the Support section of their app’s page.
You can also reach out to the theme designer to see if they can help you with this. Depending on the theme you’re using, you can check where to get support for your theme.
I’d love to know if rolling back your theme can help resolve this issue. Keep me posted!
Thanks so much! Luckily we were able to get it all sorted through Shopify somehow, but I believe you were right. Appreciate it 