There could be several reasons. The first thing to check is the battery. If that’s not it, most of the newer units have a lock switch on the wall control which may have been accidentally activated.
If neither is the case, it is likely the remote just stopped functioning. In some rare cases, the receiving function inside the garage door opener can go bad.
Unfortunately, in both of these cases, you’ll likely need to schedule a service call.
Call us at (513) 821-5095 for professional and affordable service if you are having issues with our remote.