you can do it the easy way = the way it works

- see my API string as http request
or you can do it your way
dealing with the incomplete posting of the standard MB posting to MT - and the ecowitt-http-plugin
and potential issues
@davidefa is an experienced user for the ecowitt-http plugin, the lightning plugin etc. with Meteotemplate
if he doesn't react by himself on this post after some time - ping him with a PM
it also depends on what you want to do with the lightning data ...
ps: i tried also to add the gw1100 as an extra station inside meteobridge, but no lightning data gets through. I have seen posts here that explain way, its a meteobridge issue, from what I have read.
you need to know what you (want to) do and what Meteobridge standard does - it only sends the data from the primary station.
If you add the GW1x00 as station1, 2 ... the standard won't send its data - that's why you need a custom string and a custom http request with the sensors of your GW1x00 station in it, e.g. lgt1!0total if you added your GW1100 as station 1 - if it's station 2, the sensor is lgt2!0total (for the # of lightnings) the whole variable will be, as mentioned before, [lgtx!0total-dmax.0:] x= station number
You can also have the GW1x00 post via its custom server function (and use ecowitt-http-plugin), which is at the end of the also just another http request posted by the console custom server functionality instead of having MB do the post
if I pass https://www.sint-katelijne-waver-meteo.be/template/api.php?U=1654861129&PASS=MYPASSWORD&P=1023.79&TIN=25.28&HIN=50&L=0&LD=<=&LBAT=3&Station=GW1100A&FW=V2.0.2
it gets through without a problem, and the api is updated with the lightning,
of course, sending this string will transfer L=0 and you will find a "0" for your time stamp in the MT API. The question is how to make MB create this value behind "L=" - and post it.
The answer is: L=[lgtx!0total-dmax.0:] where x= station number
Maybe you care to amend your original posting subject like " (meteobridge) posting to Meteotemplate: port 443: Connection timed out" for better understanding of the other forum users paging through the list of threads
(you have to do this in the very first post)