You might try this site to locate a dealer near you. https://help.panasonic.ca/english/support/dealerlocator/default.asp

For the fax issue.
If the fax machines are on a call (in or out) do you see a button on the phones light up? If it does then your fax lines go through the phone system.

Something that I have dealt with before on faxes is that you should not have multiple fax machines using the same phone line. Occasionally the fax machines will fight to see who gets the fax,l and thus neither gets the fax. Also If there is a security system dialer on the same line as a fax machine it can also cause problems.

You might also plug a plain old telephone in where the fax machine is and make a couple of calls to see what the call quality sounds like. If it sounds like garbage then you know that it is an issue with the telephone line.

The Cloud is just someone else's computer!