unable to access wp network admin

Hi,

I am having multisite network, but my domain has got expired sometime before, now am in need to access my network admin. I have edited the functions.php file to gain access to the main site and its dashboard, but still i cannot get access to network admin. I am now using the ip to access the main site and its wp admin. i checked the wp config and replaced the domain name with IP. Still am unable to access my network admin panel… I am not so experienced enough to access the db as its been hosted in digital ocean cloud and does not have a control panel. Is there any way to access my network admin at this stage…Any help would be appreciated.Thanks