I was in a similar situation once at Trivandrum Airport. I had IDFC Wealth CC using which I generated 2 QRs from Dreamfolks. But you can only use 1 QR code for entry, next one should be used after 4-5 hours. I politely asked the receptionist to take picture of the 2nd QR and scan it later after 4-5 hrs. After some hassle, he allowed us to go inside. This may not work at other lounges; you can just try.