No, Hapi does not charge a maintenance fee for having an account on the platform.
However, there is an inactivity fee if your account has less than USD 5,000 and you do not log in for over 60 days. To avoid this fee, simply log in and check your investments at least every 59 days. You can learn more about the inactivity fee here.
If your account has no money or assets, the inactivity fee will not be charged. You can reactivate your account at any time without any cost.
For example, if you sold all your assets and withdrew your funds, and then did not use the account for 6 months, you would not be charged anything. When you decide to return, simply deposit and continue operating as usual.