Hi Miguel,
1/3 of participants have reported having problems when running the experiment at different stages (in both windows and macOS)
What kind of problems do you mean? There are 10000 things that could go wrong (or right! 
) and if a third of your participants experience problems, this sounds like something that will require a fix (and possibly there already is one). Also: do you know what browser these participants were using?
I would highly recommend applying this to your experiment to reduce the possibility of Chrome-participants opting out because of an unspecified javascript error.