You can manually add the missing DNS records, if any as it seems, however if you have an option to export the DNS records from your current web hosting provider interface, therefore you can easily import them to the Cloudflare (as a BIND formatted .txt file).
I’d suggest you to login into your web hosting interface / cPanel and navigate to the DNS zone or DNS management in one tab of your Web browser.
Also, login to Cloudflare dashboard and navigate to the DNS tab of your domain.
Therefrom, you can compare and check which one is missing and add a new one or edit the existing at Cloudflare DNS tab using above tutorials which I’ve linked.
Kindly, take your time as needed.
We’re here for further questions, troubleshooting and help
In the meantime, it seems like you’re doing it good
www.solohappy.com responds, however it redirects to solohappy.com which is still missing.
So, you have to add another A solohappy.com (or also A @ - the at @ symbol just converts to the naked/root domain) pointed to the web hosting IP (usually it is the same as www) and make sure it’s proxied too.
However, from the best practices, I’d suggest you to use a real sub-domain/hostname like subA.solohappy.com, test.solohappy.com or whatever else you’re really using, even like mail.solohappy.com instead of the * wildcard DNS hostname (asterix symbol).
In case it’s not working for you, it might be you’d have to wait a bit longer due to the DNS cache at your local ISP (and as you have recently changed your domain nameservers, the regular DNS propagation time usually takes up to 24-48 hours to complete).
In the meantime, you could try to:
Restart your router.
Try using a different Web browser, or try clearing your Web browser cache.
Try using a Private window (Incognito mode) or a VPN connection, if possible.
Try using your mobile phone (4G LTE, mobile data, cellular).
Otherwise, wait a bit longer as stated and it would propagate and work for you too
You can ignore them for now, therefore as I mentioned if you’d have some kind of a sub-domain, you’d just add a new record new.solohappy.com and point it to the IP.
It’s more safer way than keeping a wildcard * hostname.
There is no need to add them to the DNS tab of Cloudflare dashboard.