As information for participants who feel aggrieved, your manager has been banned. https://bpip.org/Profile?id=3479982
Unfortunately, he won't come to clarify anything on your claim and this prevents you from getting your rights. At least he won't be managing any bounties in the future, unless he secretly creates a new account under a different management name. So, prepare your sharp eyes to recognize the signs.

Holding a particular coin for you entire life depends on you, if you are making profit from a particular coin I don't think their is any problem in that,but having many coins is good because if one is dumping the other ones maybe pumping. I don't seeing you holding one coin for your entire as bad thing, all you need is profit.