eWeLinkApp syncs 52 devices but shows only 30

Hi there, I recently bought Sonoff NSPanel and now I want to add a number of lights to it. I linked my SmartThings account to eWeLink and eWeLink synced 52 devices from the account. Initially the eWeLink app was showing all 52 devices but after a few minutes it randomly cuts them down to 30. Is there any UI or service limitation on the number of devices?

Try this