Server error 403 when trying to save in Elementor

I have reached out to my hosting provider and Elementor and they’re telling me that my Sinatra theme needs updated or changed. I’m trying to make a change on my home page but keep getting a “Server error 403” message. I was able to make changes to my other webpages so I don’t know why I’m having this issue with just the home page. If I add a section in Elementor and add basic text then it’ll update. But if I try to move that section up, then I get the error message. I’ve also tried adding something from my Elementor templates and it won’t save.

When I contacted Elementor, they sent me a video that showed if they changed my theme then it would save. Please work on keeping your theme updated as many people are using it. I really don’t want to switch to another theme and have to redesign it all over again.

I’ve had many issues over the last 4 years where everyone points to the theme not keeping up with updates to WordPress and WooCommerce.