Cannot login to admin anymoreq

Hello I installed your plugin for multisite..
i cannot login anymore and on top of it i could not figure how to set up multi domains.
i have three sites with three domain names (primary domain)

All I am trying to do is have all these websites share the same woocommerce database. I purchased a premium plugin to accomplish this. i thought the data was going to synch in between the three different woocommerce site. but once i purchased it, it required that i would install wordpress multisite network plugin. Since then it has become a nightmare. I did not accomplish this. I wasted money on this plugin which does not work. Then i came to your site to use your plugin functionality but i am now unable to login to my wp-admin