A forfeited Texas LLC can't change its registered agent until it is reinstated, and reinstatement doesn't update the agent either. Here is the two step order that gets both fixed, and what is at risk while you wait.
Texas LLC not in good standing can mean several different things depending on which agency shows the status and which label appears. Not in good standing, forfeited, and involuntarily terminated all require different responses. Here is exactly what each label means, whether your LLC can still operate, and the complete sequence to restore good standing before the situation adds a second layer.