Hello,
Are you able to access the device's web interface over it's LAN IP address?
If you are, I would like you to attach a troubleshoot file from the device to your question by editing it. To generate the file, access router's WebUI, go to System -> Administration -> Troubleshoot section and download troubleshoot file from there.
Otherwise, the router does not have protection against moisture, thus, there is a likelihood of at least partial hardware failure.
Best regards,