can't connect to updraftplus.com

Hi, Seems like I have the a connection issue from my second website, ie: when setti up my login/password in premium tab, i get the following error

UpdraftPlus.Com returned a response which we could not understand (data: N;)

.

I’ve posted into antoher thread where you have provided the full zip files, thinking it wa a firwall issue from the hostig provider, but my first website uses the same provider without any such connectivity issues.

I must admit though the second website is long ago needing lots of plugin updates, including wordpress iself (still running 4.3.4). This is why I want to install a backup before proceedign with consecutive progressive updates..

Thanks!