well sir, i had this same problem, "can not connect from this computer", & when i got my internet provider to change my ip address, i could connect again. they wouldn't do it right away, but it happened overnight. so when others get this error and can not tell why it happens (no notice from LL), i would recomend trying to connect from another ip straight away, go to a free hotspot somewhere if possible, to check if it is your account or ip address that may be the problem.