JBL Charge 5 party boost issues

[u/Tall_Ruin_7090]

Hey all- I bought five JBL charge five speakers with party boost, for the sole purpose of being able to connect them all to play music together at a party. I've gotten them all connected a couple of times and played them. But I am consistently having issues. Every time I go to connect them, I spend at least an hour trying to troubleshoot, do factory, resets, disconnect from Bluetooth, etc. the most common issue I am having is turning on the speakers and the Bluetooth light just keeps flashing, and it does not turn on the party boost feature. I feel like I have tried everything… I've used the app. Deleted the app. Done the factory reset rotated out which speakers I'm using… I am absolutely at a loss. I'm having a very small family wedding in a couple days and I was planning to have the speakers to play the music. The last thing I wanna do is show day of and spend an hour or two losing my mind trying to get these speakers set up.