Dear Support,

I do not have any open positions but the equity is constantly changing ...

Best regards
aF

That is normal since you traded numerous currency pairs today. Profits are, thus, reflected in currencies that do not match your base currency (USD) and keep being recalculated until the settlement. That explains the volatility observed on your equity. In your case it might be particularly noticeable because your traded substantial volumes during the day.

This feature is observed only until the settlement and only if you traded currency pairs, where the P/L calculation currency does not match your base one.