As Fjellrev notes the ownership has changed since 2022: If you scroll down at https://camping-blattnicksele.com/#buchung you can find several recensioner about camping from 2025 and if you look at Google maps itself there are a lot more: Even on their website verything looks like the campsite is active again for camping and RVing - and if I remember correctly there where a lot of Campers when we drove by (didn't stay this time) in June 2025. Therefore I will close this hint. 