What’s the error message?
If you’re using screenscraper you’ll have to signup on their website first. There’s a daily limit of something like 50,000/day and unless you donate you only get a few threads at a time but it works without issues otherwise. Don’t really know about the other sources.
If you want more control you could try using https://forum.batocera.org/d/1288-arrm-scraper-gamelist-roms-manager . It also uses screenscraper and some other sources.