mIRC is problematic

When I try to go on mIRC, I can connect to the server and all, but I can’t type in the box at the bottom. You know, where one might type “/j #rpgclassics”. Anyone know what’s wrong?

Edit: Bwahaha, this was both topic 100 AND post 1000 on this forum.
Also Edit: It’s also not showing the “You are using mIRC!” box it usually does, with the Register mIRC options, nor does it auto-pop-up the Options menu like usual.

You may have locked it by accident? Try pressing some keys and if it asks you to unlock it, then you’ve probably locked it. Unfortunately, I have no idea how to get out of this, I’ve always just closed mIRC and then reopened it. Maybe reinstall mIRC?