Hi @p1eter, Hope I can be of assistance to my fellow South African :-) , Looking at your transactions, an upgoat basically means a paid for upvote, your Steem was initially converted to SBD and then you used your SBD to upvote a post, Only half the value was used for the upvote and the rest was sent to you as a refund, the only reason for that is that there was not enough upvotes to fulfill the amount you sent therefore resulting in the balance being returned. I need to double check with the dev team if the home page calculator is 100 percent functional.

Please join our discord so that you can chat to me in real time. Link below:

https://discordapp.com/invite/S37bYma