as mentioned by jason above, the SRFF doesn't require special multiscale string set. Any string sets with 38" winding length are sufficient for Ibanez SRFF and the new SRMS series.
The factory strings that came with my SRFF806 were D'Addario XL 45-105 Super Long Scale + 130 Super Long Scale + 32 Long Scale. I've changed them to Elixir Nickel Plated Steels w/ Nanoweb Extra Long Scale using the same gauges (although the low-B is taperwound). Despite the same gauges, they have different string tensions, so definitely the bass had to be re-setup.
for OP,
From your short description, I kinda guessed that the shop you had the strings changed didn't have good guitar tech. I'd suggest bringing you bass to professional guitar tech/luthier instead to have a full inspection on your bass, even if it's still brand new. I have found on all my newly acquired Ibanez basses (2014 and newer builds) that they need to be fret leveled after they went to climate changes. According to Hoshino Gakki website, they made the SRFF series until 2016/10 for the walnut finish and until 2017/10 for the black stained finish, and you need to account that the bass was built in East Java, Indonesia, where the weather is relatively hot and the humidity is relatively high, so even if you just bought it, chances are it had gone thru climate changes.