Just click on the red button "close" on the right site and it is canceled and you have your coins back.
In my case, there is no "close" button and the right-hand side is only worded "no records" under my investment.
However, I saw my investment plan on the left-hand side in the "Investment plans" section which still active, but I cannot cancel it. Do you know how to cancel it? Thanks!
Do you see your invested coins in the balances? Also have a look on order history to asure, that your coins are not hidden in an infilled order.
Then go to investbox. Wait, until the site loaded completely.
Ah and asure, that you are logged in.
Ok on investbox you have five areas. On the left and right site are Balances, markets, Chatbox and Yobit tweets. In the main field you have on left site a table of several investboxes. On the right hand are your investboxes.
Below is the history.
If that is empty, you are logged out or your investment wasnt executed. Then you should have your coins in balance or unfilled orders.