So i try to add my trade bot to fiends list of one of my accounts

http://steamcommunity.com/id/heavymachine/

Account is fully enabled but when i try to update bots whitelist it tells me I entered invalid steam ID.So in short when i try to add Bot to friends and update bots friends list nothing happens. I presume becouse of invalid Steam ID. What should i do ?

Thanks in advance.

Have you put in the SteamID64 in the correct format, like "76561198001901215" without any sign or quotation.