Cannot find the ring network to complete set up

I spoke with someone last week, but I am still not able to connect my Ring Doorbell Pro to my network. The Ring network is not showing up as an option. My mom bought this product on Amazon in January 2018. My brother passed away unexpectedly just after this and we both had forget about it until a couple of weeks ago. I just had the chance to try to install it last Saturday. The white ring is spinning but i do not see the ring network. Please let me know what I need to do.Thank you for your help!