Assume that:
-You have an active ssh connection to your target
-You also uploaded some files to the /tmp folder.
-Made some changes to a config file somewhere.
When the machine is reset, you loose everything.Your connection, your uploaded files and the changes you made to the config file.
To understand if your connectivity issues are because of a reset keep a browser tab open on Login :: Hack The Box :: Penetration Testing Labs .
Whenever a user resets a machine you ll get a pop up and 2 minutes later the machine will be reset.
If your issues persist when there are no resets on the machine you are working on then it might be a case of the machine getting hammered by many people .
This usually happens during ‘peak’ hours which are sometime in the evening or early night depending your timezone and the server you are connected to.
Sometimes changing vpn server helps from us to eu and vice versa helps.
Also i like to avoid new released machines for a couple of days untill things calm down