I'd be pleased to help guide you to the right support who can help you create a linked website for your donations, musseldoc.
A donation link is your one-page sales pitch, and there's a separate Community dedicated to developers and the creation of links.
This site contains resources for software development, as well as the ability to ask fellow developers questions, like creating links. I recommend that you sign up and post this question to our separate online forum called Intuit Developer Community.
You can find additional information about this at the following link: Intuit Developer.

For other ways to manage donations in QuickBooks Online, you can scan through the following resources below:
Track funds you receive from donors in QuickBooks Online.
How to record donations or charitable contributions.
I want to make sure I've got you covered, so please let me know if there's anything else you need with donations, musseldoc. I'll be around to keep helping. Have a great rest of your day!