Do you have a Link display and an inverter remote or just the Link? I'm pretty sure the Link is just to monitor battery status so it may have nothing to do with operating/controlling your inverter/charger but I don't know the model Link you have. Is the Link lighting up at all?
There was also an optional inverter remote control panel. There are controls and status indicators on the unit itself. If you have a separate inverter remote, is it lighting up at all? On the chance that there is an issue with the remote or its cable and plugs, you can try unplugging the remote at the inverter/charger and see if the inverter lights up. It should just be a phone type plug on the front of the unit. Try the controls on the inverter (Invert, charge) and see if anything happens. I think you have to push and hold for a few seconds to engage the function if I recall but don't quote me on that. It should say in the manual.
Here is the manual for the Freedom Marine 25. There is a troubleshooting section at the end.
http://www.xantrex.com/documents/Discontinued-Products/FreedomMarineOwnersManual.pdfHere is a link to a YouTube video on the inverter remote:
https://www.youtube.com/watch?v=TWOdaPN1CzkYou didn't mention the model of the Link control but here is a Google search for a Link manual:
https://www.google.com/search?q=xantrex+Link+manual&hl=en&source=lnms&tbm=isch&sa=X&ved=2ahUKEwirk_yq5ZLpAhW2AZ0JHaobAbkQ_AUoAnoECAwQBA&biw=1229&bih=608