RSS not showing latest feeds

It looks like the problem is Feedburner: https://feeds.feedburner.com/GuitarsMusicGadgets

There has been an error of some kind. Ack!

FeedBurner could not deliver this feed to you because of the specific problem listed below:
Feed Address: https://feeds.feedburner.com/GuitarsMusicGadgets

HTTP Error (Code) and Message: (404) Feed not found error: FeedBurner cannot locate this feed URI.

Double-check your Feedburner configuration/settings, and if you’re still having trouble, I recommend contacting Feedburner support.

Actually I removed it from feed burner and using the rss widget configured to https://www.guitarsmusicandgadgets.com/feed
Shows only the earlier most posts.

I will re do it with feed burner And let you know

Thanks

I reburned it

This is the feed link

https://feeds.feedburner.com/GuitarsMusicGadgets

But no luck. Last two posts are not coming up. I am baffled. Please help

Something is very wrong with your source feed at https://www.guitarsmusicandgadgets.com/feed/

When things are that bad, usually it’s a plugin or theme function interfering.

Try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, try switching to the Twenty Fifteen theme to rule-out a theme-specific issue (theme functions can interfere like plugins).