@rToothless
First, close deepbot. Then login into the old bot's twitch account, and go to Settings > Connections > Remove all Deepbot Connections.
Open up Deepbot, redo Oauth logins for both the bot's twitch account under Bot login, then do the same with your streamer account under streamer login.
@HashxBrowns
Make sure you own the twitch account with the bot name you want (They must match). Then under Deepbot > Bot Login > OAuth Password > Enter the bot's twitch account information and login and authorize. Then under Streamer Login Section > OAuth password > Hit "Not You?" > Login with your streamer account login information and hit Authorize.
I do recommend removing Deepbot connections from your old bot account if you are having the same issue as rToothless.