When I try to access the Helm Control Panel I get a 403 Forbidden page.
In IIS, find the Helm Control Panel website, right click it and choose Properties. Choose the Documents tab - in there you should see at least the following items:
If these two are not there, you need to click Add and add them both. Once done, click OK on each window and try Helm again.
If you still have issues, contact your support provider.