Yeah, I had the same problem when doing mine. I would go ahead and just book whatever you can as early as you can so that you’ll be able to load up another tier 1 FP if you want to and if there is availability.
I will say if you are planning on riding LWTL around RD or right after, a FP for LWTL could be minorly helpful at that time just because the Soarin’ rope drop crowd tends to head to LWTL right after - so it gets a little busy right there… by busy I mean you might have to wait for the second or third boat instead of walking on the first one.
I don’t think they are gone. I think it’s more likely they are not released yet due to the refurbishment. I am hoping and guessing when they are 100% sure the refurbishment is completed some FPP will load for August and September dates.