Square Gateway & OAuth Redirect

Working with OpenCart 3.0.2.0

In the Square Payment extension settings Square OAuth Redirect URL (which is greyed out/uneditable) is http:// not https://

When this is applied into Square's OAuth Redirect URL setting it is rejected because it is not https://

One thing that might be the problem is I get a Warning: SSL is not enabled on your admin panel. Please enable it to finish your configuration.
Even though I have enabled System->Settings->[store]->server->Use SSL option and changed http to https in both config.php But I can't figure this part out either.

Any suggestions?
Thanks in advance,
Matthew

Matthew, did you ever get this figured out? I am just trying to get square setup on a new Opencart store and having the same issues. My hosting has ssl and I have activated ssl in Opencart with the tick box in System/Settings/Server. I haven't changed any code directly though. I am getting the same warning that you reported.

Not a good sign that I too have similar issue and its almost a year after the initial post.
Though mine does actually say https - they are greyed out and I can not copy and paste. Which means I can not get the complete CRON task info needed to finish setup.
I'm on A2Hosting. Used Softaculous auto installer. Maybe a rights issue?
If i figured it out I will come back and post solution.

I'm having the same issue as the original poster. I really wish someone would answer this.

I did contact iSenselabs to ask about this and they helped me get it working. Everything you need to know, almost is in the link they gave me.
https://isenselabs.com/posts/opencart-pages-https
This worked to make all the pages ssl, but it didn't change the Square OAuth Redirect URL to read https. I had to do what ADD Creative suggested and make all the links in both config files https. After that, it was a piece of cake.
Although, never had to set up a CRON job before so the official instruction video could have showed that as well.

Dan