If the data on your reports don't match the original one, chances are:
a) You select the wrong data source, b) The dates aren't matching c) The conversion window is different (Apply just for Facebook ads) d) There is a filter on the dashboards
If the problem happens with Facebook ads, here is a guide to solve it.
To check this go to Resources ⏩ Managed added data source ⏩ Edit
Then click on Edit connection
On Parameters review that you select the right account.
And click on reconnect
What to do if still, see the problem?
If you still have this problem, We need that you share your report with firstname.lastname@example.org with access to edit, the page where you have the problem. and the connector you want to use.
Please share a screenshot where we can visualize the right data, and range of dates.