When I try to access my router or other device on LAN I instead get a message from my ISP

If you are using Internet Explorer:

1. from the Tools menu, choose “Internet options…”
2. click on the “connections” tab
3. click on the [LAN Settings…] button
4. if the box labelled “Use a proxy server for your LAN“… is ticked (as shown below):

5.  Untick the “Use a proxy server for your LAN“… field.

6. click [OK], and [OK]