how to fix ssr problem in angularjs 1.x framework [on hold]

I have a site developed by angularjs 1.4 and its fine till I want to wok on its SEO.
I have user pretender server in order to render my code to google bot, but there are still problems like losing rank suddenly without a reason.
further, when I copy my link into social the meta descriptions don’t appear correctly. I can not use sites like ‘siteseocheckup’ to analyze my site and etc..
is there any way to fix this issue? thanks.

Source: AngularJS