Unable to sign in on wordpress

Hi cant access the wpmudev dashboard in my wordpress backend, it says Your server had a problem connecting to WPMU DEV: “403 Forbidden” Please try again.

If this problem continues, please contact your host with this error message and ask:

“Is php on my server properly configured to be able to contact https://premium.wpmudev.org/wdp-un.php with a GET HTTP request via fsockopen or CURL?”

I have contacted the server hosts and say they cant deal with this, will this affect any plugins I download? Is they a way round it?

Kind Regards