Connect with tinxy support, you need to share device with them. They will clear all old scenes from backend. There is a bug in the system it seems which they need to fix, I’m also waiting for resolution of this big since long time. Hope this helps.
How to update firmware, I have 6.3
Wifi_2switch_V1 v6.3 and the area for update firmware is greyed out and unpressable , is there any other way to resolve this old scene issue unable to delete thing ?