i have same problema, http://dispenser.tf/forum/view/14629/

I after I introduced in "Deposit Whitelist" still the same error
I know I'm taking a lot of time
I can not solve the problema
there will be someone who can help me?

Please send friend request to the bot with your alts. Then I will accept the request from here.

You said you cannot add the bot to your friend list with the accounts in the whitelist.
I would like you to send the bot friend request via Steam.

I saw it now.... 4. You can be friend with the bot here by putting your Steam profile URL or SteamID here and click the button below:  Invite Friend
5. You can add other Steam accounts to the bot's whitelist. Accounts in whitelist can be friend with and deposit untradable gifts to the bot.
I already have the problem solved
thx a lot, cya