Alexey,
Sure , I hope you can provide me the answers...
it started out from ArcGIS Pro 2.6 as a file geodatabase and then export it to shapefile...
Before that , I created and insert a Point Map Notes .. which save in the File Geodatabase.
So when I export this shapefile I had to rename it to Name something to try and see if the software reads it or not...
It did not show labels..
Here is the attachment