I just tried the link on the support site and it's working for me:
If this does not work for you yet, try the direct link to files:
Yes, now the link is working for me, too. Anyway, it turned out that the plugin was not working because there was an older runtime (RhoElements 220.127.116.11.0) installed on the mobile client. I have updated it to RhoElements 18.104.22.168 runtime and now RFID plugin 22.214.171.124 is working fine.
Thanks for your help.