@reolink-fiona Thanks for getting back to me and the suggestion. I've now raised a support ticket. If I get a solution, I'll put it back in here in case anyone else is having/will have this issue

Best posts made by nodders
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RE: Can't access RLC-510WA web interface
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RE: RLC-511WA vs RLC-510WA/410W differences
If you scroll to the right of this comparison screen you should get some indicators (scroll bar at the bottom, not that obvious to find).#
https://reolink.com/comparison/#wifi
You can dig into further details in the individual spec pages:- 511: https://reolink.com/product/rlc-511wa/?attribute_pa_version=1-pack#specifications
- 510:https://reolink.com/product/rlc-510wa/?attribute_pa_version=1-pack#specifications
From what I can see, the RLC-511A is more expensive but comes with more features, namely a spotlight, colour night vision, a 5x optical zoom, with it a variable viewing angle, and 2-way audio. It is also larger and heavier (80x72x238mm and 838g for the 511 v 67x186mm and 415g for the 510). I haven't dig into it (the above should say) but the 410W lacking the A postfix probably lacks some of the autotracking features of the other two.
Hope that helps