minimal-mistakes: Staticman v2 doesn't appear on pages

Description

I wanted to add staticman comment section on my website, but after all of the time configuring it I still can’t get it working.

Environment

• Minimal Mistakes version: 4.12.1
• Ruby gem or remote theme version:
• Jekyll version:
• Git repository URL: https://github.com/megascrapper/megascrapper.github.io
• Operating system: macOS 10.13.6
• GitHub Pages hosted (if yes provide URL to site): yes (https://megascrapper.github.io)

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Expected behavior

Staticman comment section should appear on pages that have comments enabled (ie. comments: true).

Steps to reproduce the behavior

• I added staticmanapp as a collaborator on the site repo (and received OK message on https://api.staticman.net/v2/connect/megascrapper/megascrapper.github.io)
• I left the staticman.yml file mostly on default, except for the reCaptcha stuff which is disabled in the meantime.
• before submitting this issue I also updated the theme to make sure that wasn’t the problem.

Even after all of that, the staticman form still wouldn’t appear, and I have confirmed that comments have been enabled. So is there anything that I left behind or did I screwed up something?

Example page: https://megascrapper.github.io/test/

also, https://api.staticman.net/v2/entry/megascrapper/megascrapper.github.io/master says this:

Cannot GET /v2/entry/megascrapper/megascrapper.github.io/master