I have been using promo tools for almost 3 years now, never had issue with any of them as they are all very good and professional in their services. Their customer service support team has always been helpful and quick to reply! Highly recommended!! Nothing much so far from promolta, just that i use it for more than 4 yrs now not really anything bad but no real recommendation either because its ok. For me the best part about promo tools is nothing. Its great, highly recommend this tool if your looking for something affordable yet effective in getting traffic/views. They provide quality products at an affordable price thus making us spend less money on advertisement of our videos which we otherwise wouldnt be able to afford. With promo tools my channel started growing rapidly and since then things got better and better each day.