Sorry to hear you're having trouble signing up for Imgvek.com
When I signed up I had no issues.
But maybe something went haywire when the site had issues before.
You might try contacting the site admin at email@example.com which is how I got in contact with them about the SSL.
If you send information for your username, desired password and email address to the admin at firstname.lastname@example.org they should be able to help you setup an account until the issue is fixed.
Or they could set you up with a temporary password and then you could change it once it's setup.
I sent an email to them letting them know you're having trouble but I would recommend you send an email to them as well.
Send the email to them at email@example.com which is an active email for the site as I've heard back from them within a few hours or less.
As to the mega.nz account I tried signing in and it gave me a message that the account was terminated.
I wish that imgvek.com had a file hosting service as well as I would gladly sign up and pay a monthly fee as long as I can keep my photos of the kids in diapers etc.
I contacted the admin at imgvek.com and they said it was fine as long as no child nudes were on there.
They said the diaper pics were fine to be hosted.
If you're reading this we sure could use another file hosting service as I would gladly sign up and pay for an account to host my files.