Unable to Select User in Assign To

Dear Team,

One of my customer using I-phone and not able to select user in the assign to from the mobile app.

The problem has occurred from yesterday and the problem still persists.

Please check the below screen recording for your reference.

Screen Recording

CRM Instance: https://ptechnology.sangamcrm.com

Hello Sir, I hope the team has connected with you for the same and updated the status.