Getting "Failed error" alert and redirect from github to http instead of https domain.

[SPaulusOfficial]

After successfully authenticated against Salesforce and Github, I am redirected to my app "https://clickdeploy-fluent.herokuapp.com/" but with http instead of https url. All the configs contain https urls.

If I click on "Deploy" button, I get an alert with "Failed error". If I start the full process again, it works because I am redirected to the https url.