Generally, that is what blinking is supposed to mean - that the offer is about to expire and you better get it soon. That was not working recently, and the offers that were blinking were actually not purchaseable. Sounds like it got fixed, tentatively speaking.
OP, that was not the best choice of thread subjects, given as it turned out that system appears to be working and the problem lies ...umm... elsewhere.
-- Rustyx --- 92R / 92S / 92M on Reni (Guild KnightShift). Yes, running the new FOTM R/M, cause I am not elf enough to be WD/S.
Oh, and people who have more than 3 classes are clinically insane.