Due the fact that AppMon versions are supported for 18 months (24 month for premium support) after its release, AppMon 6.5 has discontinued support since end of September 2018.
If you are still on 6.5 we highly recommend that you update your AppMon version to a current one as soon as possible!
AppMon 2017 May (7.0) is going to end standard support by end of November 2018. Premium customers are supported till end of May 2019.
Please plan your upgrades before those dates!
Details on the AppMon end of life policy can be found here.