1. Make sure you have the latest version of GB and or HB
2. Read / search the forums before posting - Often times your questions have been asked and answered.
3. Listen to the chat room, notice i said listen not log in ask everyone questions and bug the heck out of people. Often if there is a general issue with something people are talking about it - You can learn a lot by sitting in there and just reading what people are talking about.
4. Remember as far as authentication is concerned if you log off/out of GB or HB --you may need to wait a min or two before logging back on as servers have to validate your PW and user name. Server has to read that you have logged off otherwise you get that = Max sessions reached issue.
Those are just the things that have worked for me when i have had issues ---in doubt then feel free to post or ask specific questions and attach a log with your post. Please note that if you ask a question that is in the forum and has been asked 100 times and you are not specific and didn't attach a log from HB or GB you are not as likely to get a response.
Good luck guys - currently HB has been working just fine for me the past week --every day been botting 8 hours minimum = no issues.