Well, I am an Android developer. Honestly, I don't buy any kind of these services. Don't expect to cheat Instagram or Facebook with these public services, if we found some way to do it we must keep it secret. I don't know how they created gmt2 and jarvee, is it Selenium for browser or Android....etc but IG found a way to detect it. I don't know much about browser but in Android and maybe similar in ios, there are some functions IG will call to distinguish each phone like location: gps –> (GPS, AGPS), network –> (AGPS, CellID, WiFi MACID), passive –> (CellID, WiFi MACID)... your IP, dectect if your screen is touch screen or not, check phone hardware....
There are many frame work and libaries to automate a phone, but our problem is we modify Android to return fake values when IG call to check and identify your phone because we use a simulated Android phone and each IG account for each simulated phone.
There are many frame work and libaries to automate a phone, but our problem is we modify Android to return fake values when IG call to check and identify your phone because we use a simulated Android phone and each IG account for each simulated phone.