If IRS cancels appt to verify idenity before can get refund. Does it mean will wait a longer time before get refund?

It is best to contact the IRS for an explanation. The best way to do that is:

• Online at the IRS Identity Verification Service website
• By phone at the toll-free number listed on your 5071C Letter

Please follow the instructions in the article below.

What would make the IRS verify my identity?