Replace it man. I like the Acritec tubs personally the fiberglass is solid and it has adjustable support legs.Well all I can say is I hate leaks.
And I really hate leaks that don't present themselves until after work has been done forcing you to redo things. Again.
All I know is it is coming from the main tub upstairs and at this point it might just be better to rip that damn thing right out, replace the obviously soaked through plywood, and just put in a new tub. Wife doesn't want the jacuzzi jets anyways.
Tub was in the 2030 plan for renos, but well now it is starting to feel forced.
Stay away from the MAXX brand... They chip waaaaay to easy.