Delphi 7 XE and Indy 10.6.1.5182 Error Decoding Header: Switching protocols HTTP/1.1 429 Too Many Requests

I'm using TsgcWebSocketClient. Latest version of components 2022.5.0 for DXE7.
I have error messages just after establishing connection to Web Socket server.
Error Decoding Header: Switching protocols
HTTP/1.1 429 Too Many Requests
I'm using
ssleay32.dll v 1.0.2.21 1.0.2u
libeay32.dll v 1.0.2.21 1.0.2u
Can you tell what is the problem here?