If the Telerik menu is still missing please open a support ticket and collect additional information by following these steps:
Start Developer Command Prompt for VS2017.
Run command line devenv /log %userprofile%\Desktop\ActivityLog.xml
Add produced ActivityLog.xml file together with "%programdata%\Progress\Installer\Logs\msi_log_2018-04-03_Telerik_Reporting_R1_2018_SP2_12_0_18_227_TRIAL.log" in zip or rar archive and send it to us for further investigation.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items