Need Help with Magento Feed for FB & Google Dynamic Ads

Hi guys!

We’re trying to create a feed for all 2,800 skus of our products to bring into FB & Google to run retargeted dynamic ads. Every time I click generate I get the following error message “something went wrong. Couldn’t lock indexer, Reindex in process….”

I used the Google Feed setup wizard and it walked me through everything pretty simply, just can’t seem to generate a link to get an upload into FB.

Thanks for the help in advance!