There seems to be a confusion between two different problems. Cannot say if this is due to the x.y.0.3 latest upgrade.
- Gaur's issue is that his Plus is working but providing only 1 day of data. Since his Plus version is not known, either he can revert back to version 2.9.0.0 or check Plus settings where number of days of download can be set from 1 to 22. Here, it is surprising that both RKSV and Nest support says that multiple days of data is not available. Note, the Plus would behave similarly whether it is NOW or Nest.
- Biswajit & NNT's issue is that Plus is not starting at all. Besides reinstalling Plus, as gambler indicates, my support experience leads me to check one more thing -- ensure that both NOW/Nest/Plus is installed in the x86 directory for 64 bit machines. There have been at least 3 recent occasions where such users have installed in c:\Program Files, and a reinstall into c:\Program Files (x86) has solved the problem.