I have been utilizing the official Minecraft Bedrock Server hosting program downloaded from the official Minecraft website and host a bedrock server from home on a gaming computer (no other games/programs run in the background. The computer is only used for running/hosting the server) This used to not be an issue for us but for the past half-year we have been endlessly encountering this issue.
(for background my friends and I always get bad performance when we pay for a server provider so we wanted to host the server ourselves for better performance) We can successfully connect and play on our server whenever we want BUT most of the time nobody can download ANY packs on the server in any capacity. It stays at 0mb downloaded permanently.

We uploaded ALL our packs (20+ packs) to a server hosted by a reputable provider and everyone can download all the packs first try. . . so we don't think it is the packs themselves.

The only thing that sometimes fixes the problem is rebooting the server and players can sometimes download the packs for a short window of time after rebooting.
Players can NOT download any of the packs a majority of the time through and we are bewildered as to why.

My first hunch is perhaps there is firewall interference? (any info on this would be appreciated)