Two important things about FBC or a TA.
If you book through them they must make any changes. Doesn't matter whether a local TA, Chase or FBC.
Hope you have noticed there are hundreds of changes in flights daily. Your flight is over 2 months away and is like to change again. Agents are mostly dealing with travelers that are flying within a couple days or are enroute.
FWIW we are now at 8 changes for our Florida flights in 2023. We do not even bother trying to look at the details.