I like and use this program, so I decided to use the sumo day promo to go from a free to a premium license. The problem is that I cannot transfer my setup. This would take a few hours, and in the end, I would lose my existing data. When I explained this to Metricool on chat, I got some smart-arse. So I cancelled my purchase and stick with the free.
Having said that its a very good piece of marketing software which I like a lot.