Hi Sohel,
you are right, there are currently issues and support.sap.com seems to be unavailable.
For very urgent customer issues, you can reach out to the country specific SAP Support Hotline as they can reach the internal ticketing systems (backup numbers EMEA +353 91 40 4395).
SAP IT is aware and working with highest priority on bringing the portal back.
Regards and sorry,
Bernhard