I’ve started with OH since 2.3 and my installation has grown quite large now running over 37 WeMo’s (plugs, switches, 3-way switches and insights devices).
I wanted to shout out to @laursen rewriting the WeMo binding and consistently tweaking it for over a year now. This version is very stable and working better than the last stable one I’ve been running for a few years now.
[wemo] Fix stability issues by jlaur · Pull Request #14163 · openhab/openhab-addons (github.com)
The WeMo binding 3.4.2 version works great on OH 3.2 also.