Time Series Analysis on Sentinel 1 using ROI won't work

Microwave Toolbox Problem Reports
1

Hello! I was having problems with using the time series analysis tool with an ROI. There are no values that appeared in the graph. I’m not sure if I am missing a step. Please help

Thank you very much

2

Did you already check these instructions? Time Series (Temporal) of NDVI
Many error sources are discussed here: SAR Time-series Analysis tool"