idverify in irs website for tax refund, received 5071C letter for verification

Hi all, i got a 5071C  letter from IRS department to do a idverify in irs website and the letter has an control number too, i walk through idverify.irs.gov website.  in which to proceed the verification, there is "Get started" button present. i pressed, it ask whether i have my SSN#, i pressed "yes" button then it is asking for credit card/auto loan#/mortgage loan#, i dont have any of the number so it has telephonic number [phone number removed], due to corona virus impact this number is not currently active. 

 

could anyone please suggest me. how to provide my ID verification to IRS team to get my tax refund