I 3 weeks playing game with phone (android system) and now i want play with pc, but my acc is GUEST. How can I now link my account to google so I can connect to my computer?
dont bother to play it on pc. they will just blatantly ban your account for "fraudulent behaviour". Mine got banned for using emulator after playing for like 3years+. IGG is not to be trusted, do not drop any $$ into any games provided by them.
they wont even provide you a single instance of your account committed their so called "fraudulent behaviour". Even though the proof/evidence of not resource botting, nor those synchronizing nonsense is there. they will just ban your account.
so conclusion - no more $$ for IGG, play it for fun if you like.