Hey, Sapphire and sliver are merged & had a server wipe thats why all of ur progress has been reset, if u have brought a donor rank on sapphire and would like to reclaimed it please make a ticket on the discord server and provide a screenshot of the email if u have brought a donor rank
1. Some pokemon allows u to fly on them like charizard, salamance (if im not wrong) and more
2. is to buy /fly in thestore itself or just buy a rank that has /fly in it