I removed all of my Wemo plugs and switches and replaced most of them with TP-Link Kasa devices. The Kasa hardware isn’t as aesthetically pleasing, but they’re cheap and reliable. The only Wemos I have left are a Wemo Motion and a Wemo Maker, and Belkin stopped updating them years ago.
I’ve also got Z-Wave devices, and I’ve bought a few Tuya devices and flashed them with Tasmota.
The great thing about OH is that you don’t have to stick with one type of device. So if you get your Wemos working again, you can cut them off from Belkin’s cloud and go forward with another type/brand.
Good luck!