I worked with this service when I was involved in advertising, and it fully meets the stated characteristics. First of all, you can top up the budgets of various advertising accounts, such as VK, MyTarget, and Yandex, all in one window. This is very convenient, as you don't have to open multiple tabs. All budget management and statistics are concentrated in one place. Secondly, the more you top up, the more bonuses are offered for the top-up. For example, you can get an additional 10-13%. This money can be used for ordering ads, but it cannot be withdrawn, as a separate account is created for bonuses. Another plus for those who work with clients by topping up budgets for their ads: you can register them in the system as your partners and receive a percentage from their top-ups. At the same time, clients also receive bonuses on their top-ups, just like all other users of the service. At one point, this became a nice additional income for me. Personally, I found no downsides to this service. Money from the account doesn't disappear, the top-up fees are low, and there are no freezes or blocks on funds. Everything happens just as if I were topping up advertising accounts directly, but with much greater convenience and benefit.
