Hello,
I had the same exact problem and found that SIM 7.3 is NOT compatible with IRSA 5.8.0! See Page 51 in the "HP Insight Remote Support Advanced Release Notes for version A.05.80.
It states - "Important-Insight Remote Support Advanced A.05.80 support for HP SIM stopped at SIM version 7.2. HP SIM 7.3 is not supported. SIM 7.3 will only be supported with Insight RS 7.x, and customers who require HP SIM 7.3 will have to install Insight RS 7.0.9 or later."
Although, I talked to IRSA support and they indicated to me that the contract and warranty piece is not in 7.0.9 yet and is only supported by 5.80. The only option or resolution would be to reinstall HP SIM 7.2. Supposedly, version 7.1 will include this functionality and be the full replacement for 5.80, but they could not give me a date for it's release.