No, you can use permission plugins like PermissionsEx, Luckperms, etc to grant certain perms to the player using ranks, I recommend watching a tutorial on how to use them (Luckperms is more user friendly)
does it say the server is whitelisted or full when you join it? also some servers block bedrock players, so if you're on bedrock thats most likely the case
1.18 support for minehut will be added very quickly, plugins? no, that will take time, but the most used plugins will most likely be updated first so you should be fine if you wait a little bit for them to update
believe your server has an outdated plugin which does that, try /minecraft:ban instead (minecraft:ban doesn't provide tempbans though, so i'd suggest getting a working plugin)
Are you downloading the backups? you shouldn't have to download them if you're careful as they autosave, just get a plugin like coreprotect, otherwise i dont know what you're talking about because you don't have to download anything to use minehut
I think it has to do with your connection if it disconnects you from minehut entirely, but if not & it disconnects you from your server only, then i have no answer
oh you had me confused with the other image before you edited it, you were banned for botting as you probably repeated the things bots said during a bot wave so they thought you were a bot, your best bet is joining the minehut discord (https://discord.gg/minehut) and making a ticket at #support-info!
(they may tell you to make an appeal here on the forums, but you'll probably manage to get unbanned by making a ticket because of this circumstance)
Minehut has a feature where it makes backups for your server every hour automatically, check the "BACKUPS" tab in your server dashboard & apply the backups & try to find one that has your progress