Our systemd wrapper configures the influxd process to read config from /etc/influxdb/config.toml, can you check if it exists and (if so) what values it has set for bolt-path and engine-path?
By default I believe it will be looking for data under /var/lib/influxdb/. If you see that in the config, you could move the contents of your ~/.influxdbv2 under that path. You may need to chown influxdb:influxdb the directory after copying the files.
