Can't download podcasts, router won't allow it - Nighthawk R8000

[mricsports]

All of a sudden, I can't download any podcasts from any apps, on my iMac AND my iPhone.  My speeds seem alright, and I can download when not connected to Wi-Fi, so through cellular.  Is there a tweak I can do to the router to allow for podcast downloads?  This just started happening today, but spectrum did come work on the internet last week.  I have their modem and obviously my own netgear router.  Thanks, this is driving me crazy.

[mricsports]

Update, did a full factory reset of the router, still no luck...getting frustrated!!

[plemans]

what modem do you have from spectrum?

What firmware is on the router? 

Are you using your isp's dns? 

which is enabled, ipv4 or 6?

[mricsports]

Update - I found if I turned my VPN on, I was able to download all podcasts late last night, but still not without it.  But, this morning, they download without an issue (with no VPN on) - so, mine is resolved and I don't know why.  I appreciate the help - but I can briefly answer your questions, in hopes it might help someone else, or when it happens again.

spectrum hitron e31n2v1 cable modem docsis 3.1 is the modem, I believe

firmware version V1.0.4.68_10.1.75

Using the IP's DNS

ip4 was enabled, but I turned out ip6 yesterday, to no avail.

Once again, thanks for responding!