Make sure you are actually erasing the loop first.
It sounds like you have a loop length already set.

ERASING A LOOP
1. To erase a loop, playback must be stopped. If a loop is playing, press
the footswitch two times quickly to stop it.
2. Press and hold the footswitch for 2 seconds to erase the loop memory.
The LED will blink red six times then remain off, indicating that the
loop is erased.
3. Note: the ERASE function is only available when the loop has
recorded memory, as indicated by the dim green LED.

• This reply was modified 2 years, 7 months ago by EHX STAFF.

Foot switches get dirty and corroded. It depends where you live and the conditions your pedal goes through.
Deoxit makes a spray cleaner that works great on these switches.
I would try that!

Please write the folks at info@ehx.com. They can help you.

If you dont hear back please check your spam folder.
Sometimes our mail goes there..
If its not there let me know and I will forward this to the techs.

Sorry Power supply maybe? Please write the techs at info@ehx.com. They can help you fast.
they are there M-F 9-5pm NYC time.
If you dont hear back check your spam folder or write back here.

The techs answer every mail but sometimes it winds up in peoples spam folder, so always best to check there if you hear nothing back.

First what power supply are you using?
Cheap dasiy chain supplies dont cut it.
Some supplys have a slow ramp up and stall the MEL9.
Others do not have enough current to supply what the pedal needs.
have you tried the EHX supply?