Hello,
Thanks for reaching out and sharing your solution! I was going to say, based on your PHP version I didn’t see any reason those plugins would be crashing your site. However, they are large plugins with a lot of data, so it makes sense that it was a memory issue with your server.
As a side note, the Organic Blocks plugin is the only “required” plugin for STAX. You can optionally choose not to install the other plugins during the setup wizard by clicking the “Advanced” tab.
I’m glad to hear it’s resolved. Let us know if there is anything else.
Thanks!