flobadob;
Couple of things to try before rushing off to purchase new LEDs.
1. Ensure Dimmer Switch (DS) module is set to 'Trailing Edge' (TE).
More and more DSMs are being manufactured with the option to toggle between TE and Leading Edge (LE). My DSM for example, the round button on the DSM has to be pressed on/off 5 times in succession to toggle it between TE and LE. Check specification sheet that came with DSM.
2. Try and ascertain from your current LEDs their wattage rating.
Should look like this as shown below;
Example: "LED GLS Bulb 5.9 W(60W)"
Note (60W) is the equivalent brightness of an incandescent type of bulb i.e., the old 60 Watt Tungsten filament. Extremely inefficient, since less than 5% of the energy was emitted as light whilst the other 95% was given off as heat. And boy o boy did they get hot!
Also the 5.9W is the actual power consumed.
Typically TE DSMs work with a minimum load of 5 to 10 Watts. So if your DSM has a minimum load rating of 10 Watts, from the Example bulb I have shown above, you would need 2 functioning LED bulbs (11.8W total power consumed) in the DSM lighting circuit to provide the efficacy of controlled dimming.
Hope this helps.