trouble with OpenDNS

> I had turned off OpenDNS [...]

   Where?  How?

> [...] recently reenabled it [...]

   Where?  How?

> [...] my wireless router no longer uses the DNS entries I provide.
> [...]

   How, exactly, did you reach this conclusion?  The _router_ isn't, or
some web browser running on some computer/device isn't, or what,
exactly?

   If a computer/device is configured to use some particulr real-world
DNS server(s), and not the router, then I would not expect the DNS
configuration of the router to affect it much.  Similarly, a web browser
which uses "DNS over HTTPS" can bypass all local DNS settings.