I think i didn’t understand well and i have failed helping users in Turkmenistan with my bridges
ORPort is port towards TOR Relays and ServerTransportListenAddr obfs4 is the port towards users? If yes then I got it wrong and i inverted my ports because i thought ORPort is the port towards users
excrept from my config 
ORPort 8080
ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy
ServerTransportListenAddr obfs4 0.0.0.0:2023
ExtORPort auto
For bridges, the ServerTransportListenAddr is the port the client should use.
For relays, ORPort is the main port being useful. That’s also true for vanilla bridges (bridges with no pluggable transport). For most bridges, the ORPort is useful to asses your own reachability, and gets little use otherwise.
The ExtORPort is the one used to communicate between PT and tor. It’s mostly an ORPort with some additional metadata, to allow the pluggable transport to tunnel some information about the client (things like their IP, for statistic gathering purpose). It doesn’t need to be reachable from the internet (and default to binding on localhost), so you don’t have to really do much about it.
iirc in Turkmenistan, 8080 is one of the few ports that can work, so you’d want to use that for your ServerTransportListenAddr. You can put anything as an ORPort
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