you want to upgrade/downgrade your plan, you just need to go to your NapBots.com Dashboard and click on "Need More".
Do the selections of Bots depending on the plan you want to choose, the trading limit you want and validate.
Your account will be set up according to your choices.
You can upgrade your plan at any moment. In this case, you will be billed in proportion to your consumption at the end of the current period, and you won't be charged double.
Let's take the example of a subscription update form the Gold plan to the Platinum Plan on November 16th. On December 1st, your will have to pay 129 euros. This amount corresponds to the payment of the Platinum subscription for the coming month (December) plus the difference due to the use of the Platinum subscription during the last 15 days of November.
Hence, we have 99 + 0,5 x (99 - 39) = 129 euros.