Ok, so free license > free support on this forum or others (FB, Slack…), and it could take time depending on the volunteer people available, able…
Priority support is mainly what you buy with a paid license, it makes sense no?
I’m no troubleshooting expert but your issue looks related to a JS conflict, between plugins, plugin and the theme, or maybe related to your hosting provider, i’m not sure.
But now you have a clue: "Cannot read property 'model' of undefined".
Some other capable people might answer you here.
Please don’t think I am seeking something for free here. Go up to my original post and see my previous bullet points (went through at least four [and some twice] knowledge base articles, ruled out a plugin conflict, or a https: v http: conflict) for two hours prior to posting here. I put my time in and did my diligence with Mr. Google researching my error message as well before I posted. And after going through circles and coming back through BB threads that returned the same rubber wall of go back to your original starting point, I’m likely to go to Fiverr to pay someone to fix the issue as this plugin works “wonderfully” per a high recommendation.
Now that my rant is over, I’m free to work on other things and may post on the FB page today.
I understand your frustation as i have felt the same way many times (and will again), but that’s inherent to site building and aggregating bricks from many different sources in my opinion.
Patience is highly recommended in this area, it’s often like a treasure hunt when things go wrong
Good luck, i’m sure you’ll find how to fix at some point.