Spitballing, of course, but it actually happened to me: are you sure you're pinging the radio and not another device on your local network? Do you see open ports with nmap?
$ nmap -p1-65535 --open 10.0.0.149
Starting Nmap 7.60 ( https://nmap.org ) at 2021-01-04 09:56 IST
Nmap scan report for 10.0.0.149
Host is up (0.032s latency).
Not shown: 63557 closed ports, 1974 filtered ports
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
PORT STATE SERVICE
21/tcp open ftp
23/tcp open telnet
80/tcp open http
8050/tcp open unknown
Nmap done: 1 IP address (1 host up) scanned in 89.06 seconds