Plus signs (%2B) in feed URLs

question
#1

NewsBlur doesn’t seem to be able to subscribe to feeds with %2B in the URL. Is there a way around this?

#2

What’s the url?

#3

This one, for example: https://eur-lex.europa.eu/FI/display-feed.rss?myRssId=wG633VnSscgwEZSOtDHYLLQfGro7%2Bj5J