IPS Community Suite 4.2.x

[WildMano2]

Using 2.0.4 version of plugin for IPSCS4.2.6, custom dedicated server with curl isntalled but once i try to setup login handler it says that:

login_handler_steam has rejected the details. Please check the details and give correct, and try again.

Key is valid working with other app, all files was uploaded correctly.