hopefully you can eventually find something to replace them with. TP-Link doesn’t have a great track record imo. Poor build quality, bad software, extensive unpatched vulnerabilities, and accusations of spyware (I haven’t gone to the effort to confirm that point yet though.) I messed with them a few times doing network support for businesses. Hated them every time I touched them. Maybe the light switches aren’t as bad in all areas, but I doubt their networking is any better, it’s probably worse since it’s IoT.