never mind, I just found this topic: https://community.tp-link.com/en/business/forum/topic/265390?replyId=601178

After updating 3 different switches (TL-SG2008, TL-SG2008P and TL-SG2218) to the latest FW (3.01 and 1.01 for the other 2 models) the RX/TX data is not updated any more. The values stay 0 and nothing...