Due to the nature of audio declipping, the repaired signal may exceed the amplitude limit of your host and as a result, it may sound like it is clipped again (see the image below). This is expected!
For this reason, on the left side of the plug-in, you can see the Protection LED indicator, which is a visual cue that informs you when this is happening.
All you need to do is turn down the output gain slider, until the point where the Protection LED indicator stops flashing.
….ok, but how is it possible to clip my audio again?
Let us explain with an example...
Imagine an audio recording that has been clipped at 0dBFS. If you declip it, the signal gets reconstructed above 0dBFS (see the image below).
Every DAW will inevitably clip it again because it cannot represent the reconstructed output. All you have to do is turn down the output gain till the Protection LED indicator stops flashing.