Testnet full node is launched & working but not syncing

I’ve setup from source and launched the Testnet full node using this manual - Run a Sui Full node | Sui Docs, but when I’m using following command:
curl -X POST -H 'Content-Type: application/json' -d '{ "jsonrpc": "2.0", "id": 1, "method": "sui_getTotalTransactionNumber", "params": [] }'
…it shows:
So looks like my node is working, but not syncing.

Could anyone help me to fix the issue?


Check again in : Node Checker

Thanks @Pyzz , but I don’t want to open ports
Also, why I should use any external tools instead of using native commands?

i have this same issue, ive also tried them sites, theys ay established connected but no sync for two days, tried every guid ei can find online, nothing showing whats wrong, tried with and without peers and ports on firewall as well as node as a service and without can anyone advise?