Your broker has minimum Stop Levels.
That's not an issue with the EA - that's an issue with your trading.
IOW, you want to do what can't be done, because your broker doesn't allow it.
Or, still IOW, the price is moving too fast and the new SL is too close to the price.
And, yeah, I can see, and this doesn't mean that the EA stopped working!
The EA is working as expected.
.ex4/.ex5 files can't be fixed or modified / I'm not a coder!