Page Builder & PRO page editor

Nice Page Builder, but to make a page the main page you have to add a code to your index.liquid. But my store doesn't have that, just an index.json. Contacting is difficult, usually I don't get a response.

I have reached out to support multiple times to find out of I can change the pages from non index. Crickets. I would sure like some support. I didn't realize this to after I spent time making the page.

It would be great if support would respond to my emails. I have issues with making pages mobile friendly and want help in creating certain functions. I have reached out several times and no reply. I tried both from the app and adam@gravitysoftware.co.uk and no reply so I am reaching out here hoping someone from support will respond. I like the app but I need some guidance and help.