Hi Pete, welcome to OEM. This is quite an old thread so can you be more specific about your setup and what you’re doing, have tried as the original users in this discussion may not be about.
Are you using nodered?
There have been lots of changes with hive recently, they changed api, again. They changed url to “beekeeeper” (exclusively) not so long ago, and more recently at the end of 2020 they moved to an AWS server which has introduced a different authentication level.
If you checkout the hivehome threads on openhab, home assistant and domoticz you will find many users experienced authentication errors and someone worked out how to use NPM to get an initial auth token which could then be used and regularly renewed in other softwares.
I use Python and used to communicate with hive without a library, now I use pyhiveapi (via pip) as they too have now cracked that initial authentication token api. Although intended for Home Assistant, it can be used freestanding which is how I use it currently.
I know nothing of nodered or how their hive integration works and where it’s at currently, but there’s been lots going on at hive to contend with.