Here are the steps to downgrade your Platinum membership to Gold:
1. Go to your Dashboard and click on Update my subscription.
2. On the Selection page choose two bots Daily and Weekly (at least one of each) making sure that the % distribution is 100% and click on Next.
(Please check that the "Advanced Mode" is deactivated)
3. You will arrive in the validation page where you must set the amount of your allocation to 3000€ (basic parameter for the Gold plan).
4. Click on save.
Warning: If you currently have Hourly bots activated, this will close their positions.
Also if choosing two bots forces you to deactivate one or more bots, obviously their positions will be closed.
In case these positions are in the negative, it may be a good idea to postpone your subscription change.
If this does not solve your problem, please contact the support at firstname.lastname@example.org.