I host many sites on SiteGround. When I use thier Let's Encrypt feature and force https (Forces your site to work entirely over an encrypted HTTPS connection. The redirect is performed on server level and works for any website.) I can no longer log into my solo account. If I remove the force https, I can log in again.
|PHP version (in x.y.z format)||7.2.20|
|Akeeba Solo version (x.y.x)||3.6.0|