...you can go to Breakaway Propane at:

435 MA-134

South Dennis, MA 02660

(508) 398-3831

wesbite: https://barbequegrills.com/

This is a common problem with many grills and is almost always because of the fuel line regulator (the UFO-shaped thing on the gas hose near the fuel tank). Regulators tend to be sticky. When they stick, they limit the amount of gas and will not generate a good grilling temperature. To reverse this, release the pressure on the regulator to restore normal fuel flow by following these steps:

Open the grill lid.

Turn off the gas at the propane tank.

Disconnect the gas line from the tank.

Turn all control valves to high (including the side burner if you have one).

Wait for one minute.

Turn all control valves to off.

Reconnect the gas line to the tank.

Slowly turn on the gas at the tank.

Light the grill.

Your grill should now heat normally

...the grill may be in bypass mode.  Check out the Weber website (or pdf from the website), to the left, to get the grill working again.