>> Impossible to log wpmudev on my domain

Can you explain and help me. solve these two problems please ?
1. I configure php to have 3000M of memory_limit
dashboard > support > system info : memory limit = -1, surprising
2. Grant access impossible so I disconnect my account and try to log : impossible !!

Thank you
php-infos : comme1marque dot com /phpinfo.php (no s)
Your server had a problem connecting to WPMU DEV: "Error unserializing remote response.". 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/api/dashboard/v1/ with a POST HTTP request via fsockopen or CURL?"