Supports breaking off mid-print

[DrinkMoxie]

Hello. I've recently come to possess a FlashForge Creator Pro and I'm teaching myself how to use it.
I've had a few successful test-prints, but now I'm running into a new issue. Lately, on all my prints, the supports are breaking off midway through the print.
I've been using the tree-like auto supports in FlashPrint, using the pre-sets for both ABS and PLA. I've tried fresh nozzles, leveling the build plate, and trying to fine tune the heat/speed settings. I also tried making the supports a but thicker, thinking that would make them sturdier. I actually just installed a new slicer, and I'm going to try printing from that in case there's just some weirdness with FlashPrint but I figured I'd jump on here and try to get in front of the issue.

Sorry if this is simple new-guy stuff. Any help is greatly appreciated. Thanks!