For the last offers with Fyber that were Gardenscapes and that Puzzle Game I directly got the 12 crowns offered. So you can say that for smaller amounts its no problem - just FOLLOW the instructions as you usually need to complete the games tutorial to get the crowns - not just dl and install.
BUT ofcourse theres the other side - last week they offered 708 crowns for that FILESFETCHER Trial account "register with creditcard".
Ok I did register - but 3 hours later still no crowns - so I emailed Fyber suppport - and got the usual response email "we need the following...."
Ok I send them screenshots of my Trial account and also the conformation email ... Only to get the next email telling me "registration email with FULL HEADER"
Ok, in Apple Mail thats a bit tricky as the header always only shows my name - but I did send them all they wanted ... Only to get another email telling me that they need also my full name visible in the Header (as I told Apple dont provide this) ... So I did a PDF Print (where it IS visible) AND I send them the LONG HEADER data where its in the "received" headers.
Now I wait for their next email ... Hahaha
I already cancelled my "Free Trial" today after 5 days and received the email from FilesFetcher. And luckily it's by creditcard - so in case filesfetcher starts billing me (cause dud we never received your cancellation ... Lol) then THAT is easy.
Because if ever someone debits from your Creditcard that you dont know or authorized - just inform your bank to get that money back. Just tell them "I dont know them and have no related business with them" ... Your bank will ALWAYS act in your behalf. In case I have to I just send my cancellation and the confirmation email to my bank - thats proof enough for them. Thats why I LOVE CREDITCARDS !!
I now have to wait for Fyber to answer my last email ... I keep you updated.
If they still try to delay my "payment" - luckily they sit in germany so I just will inform german
Office of Fair Trading - then they will have some fun with them.