While I had previously rated this addon with 5 stars, that was because I was able to set things up relatively easily and without issues (or so I thought). The problem I eventually encountered is that some accounts (not all) do not sync as expected.
And herein lies the biggest problem with this addon; the complete and utter lack of any real support. @jaxel's response to just about any question in the discussion thread is "read the FAQ". We've all read this FAQ, and when we still have issues, the answer again is "read the FAQ" over and over again.
So it's pretty clear this developer is not interested in putting forth the effort to help anyone that has issues with this addon; not only is this lazy, it's disrespectful to users to just copy/paste the same response to every support question, and users should take this into account before purchasing this or any other addon by this developer.
Just take a look at the responses to my posts in the discussion thread and you'll see the (lack of) support you can expect. I will be exploring @NixFifty's addon in the meantime that achieves the same purpose as this addon.