If you cannot join to the servers, then check your firewall which blocks the connection..
You must be logged in to open shop
After Registration, you will be able to save your progress.
On the main menu clear checkboxes "Skin", "Name". Skins and nicknames will be hidden.
Click the "Skins" button and then choose one of the available skins. All skins have their names. If you want to add custom skins contact admin in Discord.
Clear the "Dark" checkbox on the main menu. Also, you can use the "Grid" option which marks each sector in the background.