Pasting the paypal code into the text editor (either through Wordpress or through a text element, classic or current), The code gets stripped from the text. Below is an image for how it looks in the text element editing in cornerstone.
But, when I go to the page, I see no button
You can see that the form is still there, but the paypal code is gone. I have seen other similar support threads that recommend using the classic raw element, but, alas, that does not work either.
The URL to the page is https://avpma.org/donate/. The website is part of a mulit-site Wordpress installation with heavy server caching that I am not able to access.
The full paypal code for the donate button is:

Thanks for your help.