Hi Sandra,
Is there an error that is preventing you from entering data? If so, please describe the error in in more detail.
Otherwise, if you are trying to enter data directly into the table, please note that this is not possible. All data must be entered as "expressions" in the Expressions box for each variable in Analysis View. For more information, the following help page describes how to build and edit expressions:
https://www.energycommunity.org/Help/Concepts/Expressions.htm
Hopefully this helps, but please let me know if you have any more questions.
Thanks!
Emily