About Catching SAP Element

Hi, I’m computer engineer in company.
I encounted critical problem in developing RPA on SAP.
At this morning, I could catch SAP elements into smaller units. but After a few hours, It’s changed to recognization on big units.
I tried to solve this problem by reinstalling. At first, it worked. but after a few hours later, it’s changed again.
UIPATH STUDIO version is 2018.4.2
SAP version is 730 final release.
Is anyone has a experience about this problem?
Thank you.