OK, let's see...
- "
route add 62.210.0.1 dev eth0" means: "host62.210.0.1can be found oneth0". - "
route add default gw 62.210.0.1 dev eth0" means "all non-local traffic must be sent to host62.210.0.1usingeth0".
Considering that you already configured 62.210.0.1 as the default gateway on your network config file, the second command seems redundant (and since you are also specifying the network device where 62.210.0.1 can be found, it also makes redundant the first command). To add that route in LEDE, I would add just these lines to the network config file:
config 'route' 'gateway_route'
option 'interface' 'wan'
option 'target' '62.210.0.1'
If that does not work, execute "ifconfig" then "route", and post the results here.