How do I stop tracking links from being Https?

Your software
My Mautic version is: v2.15.2
My PHP version is: 7.0.33

Your problem
My problem is: When I send an email and Mautic converts all the links to trackable links back to Mautic, they are all https. I want these links to be http, not https, as they contain no private information and I have no other reason to pay for an additional certificate for my Mautic installation. I’m using a self-signed cert to secure my admin connection, and that’s all the security I need (I am not using Mautic forms)–except Mautic insists on making the tracking links secure. Why?

I’m pretty sure this never happened until about a month and a half ago (about the time of the last upgrade). I DO NOT have https in the “Site URL” field under Mautic configuration.

Any ideas?

Thanks

These errors are showing in the log: NA

Steps I have tried to fix the problem: Checked “Site URL”. Cleared cache.