Which is best paper or computer based IELTS?

Can anyone suggest which mode is better to write ielts? Paper or computer? I have good typing speed.. and I'm comfortabl

Do Professional LOR’s require any stamp from the company?

Do we need to get the lor sealed / stamped or is it not required and can we submit a pdf?

Duolingo English Test

Are we allowed to use external mouse in the test? And is it compulsory to use passport for identification?

Which University is good to apply with CGPA 6.9 & IELTS 6.0

University of Texas at Dallas or CSULB/CSU Chico