No — there is no time limit for how long you can keep and use your Simulator or LiveX account.
You are free to trade at your own pace and continue using the account indefinitely, as long as you follow the rules.
⚠️ Important: Inactivity Rule
While there is no expiration date, you must avoid periods of inactivity longer than 7 consecutive days.
If your account remains inactive for more than 7 days, it may be automatically suspended due to inactivity.
This applies to both Simulator and LiveX accounts