There are many possibilities. Your dish could have moved out of alignment for some reason, or the radio could be having problems, or there could even be water that's gotten into the coax fittings. Or, it could be something else.
A rep will definitely have to help you with this. They're on M-F from approximately 8AM to 5PM EST, and they should reply when they see this thread. In the meantime, if you don't already, please be sure to leave the HughesNet modem plugged in so that the reps can attempt to run remote diagnostics on your HughesNet equipment if they deem it necessary. And I say attempt, as with specific types of issues they may not be able to, but even not being able to perform the remote diagnostics will help to inform them of what may be going on.
I'm glad you found the community, thank you for posting. After running and reviewing your site diagnostics, we have decided as a courtesy to dispatch a technician to do a complete review of your site due to the concerns you've been encountering. Your dispatch is currently scheduled for our earliest available slot: Tuesday, Nov 27, 2018 between 08:00 am and 11:00 am. Call us at 866.347.3292 and reference case #116935423 if you need to reschedule. Please let us know how the site visit goes.
Someone who is at least 18 years old needs to be present.
Call us at 866.347.3292 and reference case #116935423 if you need to reschedule.