While buying the plan without having the current plan over, the plans do not sum up. I.e., for example, that by buying twice Monthly business package 60 Mb you'll get two months of usage of the Monthly business package and you can download only 60 mb of images daily during these two months (but you can't get 120 mb daily within one month). At your personal account the expiry date of your last purchased plan is indicated (the clock icon). After it's over another plan, the one before last, will be launched and the expiry date will be updated. To avoid any misunderstanding with the plans, try not to buy more than 3 plans at a time. If any of the plans won't launch, please contuct us, we'll try to handle it without any delay.