According to the chain analyst @ai_9684xtpa monitoring, 0xd7A51Ef6cb1401FbB5119c699985b4a815C6EbA2 or for the Gloem Network related address, inferred reason for the Golem Network recharge exchange is
Coinbase, Bitfinex, Binance, the address of the receiving source is also these three addresses, the transfer amount and wallet balance can be roughly the same.