Aggregatev2 on Do: https enabling fails

Hi, dear all.
I bought a domain (coliassocloudservers.com) from LWS and I set up Aggregatev2 in DO using the sub-domain (odkprojects.coliasssocloudservers.com).
At the Https enabling step, I get the following message (see the screenshoot in attach).
in DO and in LWS, I've set a A record pointing to the concerned IP_droplet:
is there something else that I need to set in LWS and/or in DO?
in advance thanks for your replies.
Regards,
Amal

Hi,

Similar issue has been resolved on this link.

Thanks

Hi, @A.N.M_AL-IMRAN
Thanks for your suggestion;
but, I think it's not really simailar to the one I'm facing.
Best,