If you think the board is defective, you may send it back for us to check for you. If you had modified web GUI, then it may truncate the string, due to certain Java code may not work properly. You will need to re-flash the firmware and GUI/API code using factory provided package.
Clock on the board is not accurate without internet access or realtime clock chip, that is normal. You will need to configure it to be able to access internet, or have a DS2417 chip with its own crystal and battery to maintain the time accuracy.
If you have clock problem and not able to send email, too, then it sounds very sure that has network configuration problem.
Personal GUI need to be generated by us for you then you can upload. That is a free service when user purchase a lot of boards, or charged service if not purchased regularly in large qty.