I'm having the same issue, until I can find a permanent fix, try charging with the case lid open. That's the only way I can charge my right earbud. When the case is closed the right earbud battery gets drained 😞
Hi, I am sorry to hear your Buds are not charging. If one or both of your Galaxy earbuds are not charging or turning on, the issue may be with the earbuds themselves or the charging case. Using a charger that isn't approved by Samsung may cause charging malfunctions; it's also possible that the earbuds may be damaged. You can try fully charging the case, checking the earbuds for damage, or restarting the earbuds. Try these steps here: https://www.samsung.com/us/support/troubleshooting/TSG01206422/
Please let me know if this helps.