Sadly there was a reason they went out of business. Thankfully I got a refund before they closed down. What they were trying to achieve was a good idea but shoving it all into a box up the mast probably want a good idea and they didn’t keep on top of their firmware.
These guys are a good source of information for options.
https://www.rvmobileinternet.com
Given how patchy Marina wifi is you might be better off just getting a cell hotspot with an external antenna up a mast for the weak areas. The integrated wifi and cell options are expensive and the software can get flaky.