So I've downloaded the ActiveCaptain app on my iPhone and what I believe to be the latest 2020 charts. I have not sync'd with the 106's yet. When I look at the charts on AC through the Garmin website I see the contour lines on all of the local lakes I fish on a regular basis. When I look at the charts on AC on my iPhone I see all of the contour lines on the same lakes with the exception of one lake, and it's my favorite lake. I wanted to update charts via Garmin Express using an SD card but gave up because you can't even open GE on mac. I've followed all of the uninstall, install, allow cookies directions provided by Garmin to make it work but it's hopeless and get a "Keychain" error when trying to login regardless of what I try. Lastly, I tried to leave feedback for AC through the iPhone app which turns into an email to G support and included the question about the missing contour lines on the one lake on the mobile charts, and then it wouldn't let me send the mail. So I'm just not getting it and don't find any of it very intuitive. I really tried to figure it out without having to come here and ask, but if anyone has experience and words of wisdom with this it would be appreciated