Welcome to the forum!
I would guess that the lift system is in need of lubrication. Have you done that? Do you have an owner's manual? If so, that info will be in the manual. If you need a manual, you can probably find a copy in the resource library here on the forum.
Check this series of videos for info:
This video is just one of many, excellent, instructional videos in this series.
You probably need to lube the guide rod, the cables/pulleys and the slides on the exterior of the trailer. This is a normal maintenance item on Hi-Lo's. The lift system should be checked and serviced annually.
Was the Hi-Lo level when you raised it at home?
Good luck!
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