I used to have a nice amount of ripple back in Jan 2017.
I had it on Gatehub also. I still have 25.922 there but
cannot liquidate it.
On this link they state that the minimum reserve is 50XRP
https://wallet.gatehub.net/#/help/overview/walletsWhy? why does there have to be a reserve?
They say it is an anti span thing
EDIT ****
After a bit of surfing on their site the reserve is actually as follows
The main reserve requirements are:
20 XRP per account (always required),
5 XRP per each trustline* (connected gateway).
5 XRP per each open order.