Worth asking, since "Gyr Abania" is not a zone as such – are you having trouble with all Gyr Abanian regions (Fringes, Peaks, Lochs, Rhalgr's Reach)? Have you tried entering the problem zone in multiple ways (teleport, land routes)? What about dungeons noted as located in this region?

If all four zones are malfunctioning, what about the other Stormblood zones? (Kugane, Ruby Sea, Yanxia, Azim Steppe)