Creating a new subsite on multisite install


Having not had much experience with multisite, I’m wondering, how long should it take to create a new subsite? I’ve tried two methods; 1st time by creating a new site through a formidable firms registration and the 2nd by using ns clone plugin.
The two subsites I created yesterday are now up and running but two I made this morning are still not. You can see they’ve been started but the link sticks.
The ones from yesterday only started working after I removed something flywheel put into the config.php file that wasn’t present in the WordPress network setup .

Does it normally take quite a while or should it happen much quicker?

Thank you,