i2pd: [FreeBSD] Can't access local hidden service website via Socks/HTTP proxy after ~1 hour

i2pd website stops working after 1-2 hour, running as _i2pd user (created by installer), http and socks proxy works just fine. Also, there was no default config file in /var/db/i2pd so I created mine. No suspicious errors in logfile. Any ideas?

OS: FreeBSD 11.1-RELEASE-p10 (generic kernel)
i2pd: i2pd-2.18.0 (installed from pkg)
kern.maxfiles: 1043143
kern.maxfilesperproc: 938826
kern.openfiles: 2310
kern.ipc.maxsockets: 1043144
kern.ipc.numopensockets: 1916

i2pd.conf:

ipv4 = true
bandwidth = X
floodfill = true
limits.openfiles = 0
limits.coresize = 0
limits.ntcpsoft = 0
limits.ntcphard = 0