Expert Technical SEO consultant with extensive experience with Framerr

One of my clients has a framerr website. Their homepage started deindexing around 7 months ago. They have had a www https url that got indexed but completely dropped around 6 months ago, then it changed to a http url that started getting clicks because of a reddit comment that got a lot of traction, and we redirected them both to now a https non www url. However, now the home page is not getting any impressions and clicks anymore. I think this is because of a custom removal of the http url as it has removed any variant. I need someone to help me find out why their home page has completely dropped from indexing, in a consultancy call of 1-2 hrs. Do not contact me outside of Upwork!!! (Immediate ban) Show me case studies of technical SEO projects.