Attach m28 adaptor to moes zigbee3.0 by100 trv

I have purchased a moes zigbee3.0 by109 trv to replace a broken hive trv with the possibility of integrating more if all goes well.

My radiator valves require an m28 adaptor to connect any trv. However, i cannot find any way of incorporating the attachments supplied and the m28 to get a firm screwed connection to the by109 body. How do i connect these together?