Customer attribute created from admin not saving value in it.

Hi
I am working on a Magento2 website (Magento ver. 2.3.5-p2). I am running it on the DB migrated from existing Magento1 website.

When I create a new customer attribute in admin and save it, the value is not saved. I noticed that the attribute data is not getting saved in the eav_entity_attribute table.

How can I fix it, please suggest.