When i try to download a single rom from mame 272 full I keep getting.  Any help as to why I can no longer download roms?  Thanks

 https://www.retroroms.info/forum/   

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Too many download connections can also temporarily limit downloads

The message says it all -> you must enter a username and password (same as for the forum). It should ask you for it, otherwise check your cookies/cache of your browser.

Downloads :: Forum

I solved the problem.  I was browsing in incognito mode and in that mode it won't let you download anything.  Once I just browsed in normal window I can download again.