Welcome to the Q&A Forum

Hi there! Thanks so much for the great question! Unfortunately adding more than 3 competitors to a campaign is outside the tool's capability at this time however you can definitely create an additional campaign for the same website and track 3 other competitors that way.  Another tool you may be able to use (depending on the type of data you're looking for) is Open Site Explorer.  If you're interested in seeing competitive link data, OSE gives you the option to compare up to 5 sites in the Competitive Link Metrics section. Hope this gives you some tools to use in your research! If you need anything else, please feel free to send a quick note to help@moz.com

I found confirmation from another thread that the Moz crawler has issues with SNI digital certs, which we use on our site. Here is an example of someone else who had the same issue: https://forums.aws.amazon.com/message.jspa?messageID=614259 Note their closing comments: "I turned off SNI and everything appears to work, as long as these services use the http version of the site. At the end of the day, nobody wants to take the blame. MOZ claims that SNI is supported but does admit that there appears to be some problem." We can not "turn off SNI" and allow http access to our site, we must enforce https across all requests. Since Moz is unable or unwilling to engage with us further on this issue I suggest we find a different service with more up to date crawler software.