I am in a very difficult situation right now. In one of my gig I have to use Facebook SDK and facebook Application Id and lots of setting on the facebook side. I also I have to so some settings on Google play console account.
So when Someone orders my gig If i tell them what to do they got confused and and maximum time they failed and It kills too much time too. When Buyer failed then they dont want to continue and wanted to cancel.
So, The solution is if buyer add me as a developer on facebook and google play console account I can do the work easily. For this I need to give my email address. Thats the most critical part. As Sharing mail is resticted so what will i do? Can email be shared only on for working purpose?