Trying at multiple airports in Australia. Sydney - YSSY - was about the only one that was accurate.
Many other airports : YMML, YPPH, YBCS, YBRM, and so on. Rarely was it close. Winds incorrect by a long margin. Temps 4-5C degrees or more off or its stayed at 15C. QNH wasn't accurate or not displayed.
I followed the guidlines for setting up FS2004. I tried different servers, in fact all of them. Same result. All running as admin (made no difference nor should it anyway). Latest FSUIPC.
Seems to be a lot of other posts about it not injecting correctly if at al for FS2004.