Gre reschedule

HiI am trying to reschedule gre test, but here they are asking me to pay 115 dollars, While registering for gre i appl

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?

Hi can someone rate my chances in these unis

8 cgpa, Electronics and computer, 13+ months of internship + work ex in data science field, good in nlp. Gre waived off

Suggestions for MS in Machine learning and AI.

I want to do a Master's in Machine learning/ AI . Graduated from NIT Durgapur 2019 , Computer science Department . CGPA