Hi,
I have also this wireless switch (TS004F) and for me it was working fine with this Blueprint, but after I updated Z2M o version 1.19.0 I started noticing that the actions were done only on the second press of the buttons. I later found out that in 1.19.0 a native support for this switch was added via z2m (1.19.0 changelog) and I also had still the external converter in place, thats why on the first press I received “brightness_step_up” (action from z2m) and the second time I received “3_single” (from the external converter) and this blueprint works only with the external converter. When you remove the external converter the switch is still supported in Z2M, but does not work with this blueprint.
There is also a blueprint available for the TS004F with the native support of Z2M without the external converter here which works without issues for me.