I found the same thing Mike did, as I’ve snooped around the badges section quite a bit, and I hit my like limit several times before receiving “member” status. After becoming “regular” I never hit the limit (although I have given fifty likes in a day) until just recently, and it’s been stopping me.
"What is happening that indicates to you that you have run out of likes?"
The system gives me a message that says “thanks for sharing the love, you’re almost out of likes for the day” and then I have about five more and then it says “sorry you’ve used all your likes for today, please wait — (however many it is till the next day) hours and try again”
I don’t know what the exact number is, since I can’t even count that high with my shoes off… it’s just irritating, and I’m quite sure it’s stopping me before it should because if it wasn’t I’d already have the “higher love” badge