It sounds like you have not included your full certificate chain in fullchain.pem. Please see Enketo certificate issue on Central 0.9 - #10 by LN. Please also note that we don't support self-signed certificates at this time.
It sounds like you have not included your full certificate chain in fullchain.pem. Please see Enketo certificate issue on Central 0.9 - #10 by LN. Please also note that we don't support self-signed certificates at this time.