Today I received a second IRS Form 5071C, dated Feb. 8, just three days after the first. Both have the same, exact Control No. Do I need verify my ID again?

I received two 5071C letters, one dated February 5, 2019, which I completed online immediately; the second one arrived today, dated February 8, 2019. They're exact duplicates, with the same Control number. I don't need to go to the website again do I? 

After I completed the first ID verification online, I checked the "Where's My Refund" site and all my bars disappeared, with a message saying my return was being processed and a refund date would be given once available.