The livecoms documentclass currently uses the natbib package for bibliography management which is ancient and no longer really developed.
In particular, natbib only supports the bibtex format, which has very limited support for citing things like web sites or software (which I guess is a common use case here) - they all end up as the @misc entry type.
Switching to biblatex would provide support for the biber backend (while still supporting bibtex as well). biber supports a much wider range of entry types, as well as UTF-8 inside the .bib file.
See e.g. this great summary on the topic.
Note that overleaf also recommends using biblatex.