Hello, 

We do all our web stuff in house. We're a very small library but I created our website on wordpress using Elementor 3 years ago (I'm a graphic designer with experience building websites). For the last few months, I've been re-working the website to be ADA compliant. This has been a little tricky because Elementor doesn't give you access to html coding for most of the site. But they've been making some changes and it is getting easier to make the changes I need in regards to Aria-labels, etc. Still working on the skip links and homepage though.

I use google lighthouse to check my compliance as I work.

All the advice I've learned on becoming ADA web compliant suggests starting from scratch but since we had just done a total overhaul, I wasn't willing to do that and frankly it's worked out fine for us.

I do suggest creating an accessibility page with a note on using third party widgets, as well as putting the most important information in purely text.