Please explain why my page has been disabled. I think this was a mistake. Could I be reinstated?

Which one are you speaking of G-Mail, or Google Web Tools? Or some other type of Google-related account? Generally they're all tied together.

This depends entirely on how you got "UN-instated" on your account. If it was for a TOS (Terms of Service) violation, you might as well give up on that and create a new one. Google is not well-known for reinstating TOS-violation-disabled accounts, and - for that matter - neither are most others.

IF HOWEVER - you just mean you've lost your password, username, etc and can't get in that way such as trying so many times you got locked out, then the link below may be of help, it is Google's Account Reinstatement page. Note the links in the page and try them.

Please update your progress here, or clarify if there is anything else you can think of we should know to help, and best of luck!
https://support.google.com/merchants/answer/188482?hl=en

Reasons Facebook disables accounts:
If your Facebook account has been disabled, you'll see a disabled message when you try to log in. If you don't see this message then you're probably experiencing a login issue. Get help logging in.
We disable Facebook accounts that don't follow the Facebook Terms. Some violations include:

• Continued prohibited behavior after receiving a warning or multiple warnings from Facebook
  (*sometimes also WITHOUT a warning!)
  -Unsolicited contact with others for the purpose of harassment, advertising, promoting, dating or other inappropriate conduct
• Use of a fake name
• Impersonation of a person or entity, or other misrepresentation of identity
• Posting content that doesn't follow the Facebook Terms
• (*if you do more than about 1 friends request per day!
• and then this "friend" beeing asked complains to Facebook)
• * = my comment!

Please review the Facebook Statement of Rights and Responsibilities to learn more about our policies. If you think your account was disabled by mistake you can submit an appeal https://www.facebook.com/help/185747581553788/

i dont think they will give you your account back because they are very strict to those who violate their terms.same has happened to my friend and his account was temporarely blocked by youtube.

Hello Madam / Sir,

I made a big mistake. i wanted to my friends say something about me and i forgot to change the message. so you deleted my account.

i am very very sorry because of it. Can you active my account again please?

That is the warning "Your account has been disabled by an administrator. If you have any questions or concerns, you can visit our FAQ page here."

What can i do to be activated my account again?

Regards...

I know how frustrating this could be for you for not being able to open your facebook.

But don't worry i will help you with this.

I had the same problem, not being able to get to my profile using Firefox. I fixed it by going to Tools --> Options --> Content --> Block pop-up windows: Exceptions --> enter www.facebook.com and hit Allow.
Then you will be fine.

the only way is to cantact ebay support:

You should have received an email explaining the problem and what needs to happen before your account can be reinstated. If you can't find it, click My eBay at the top of the page. You'll find a copy of the email after clicking the Messages tab.

There are two reasons why an account may be suspended:

Non-payment of eBay fees: Account balances of $1 or more must be paid in full each month. We'll automatically reinstate your account once your balance is paid. You can pay by credit or debit card, by check, or through your PayPal account.

Violation of our rules and policies: For policy violations, you need to check the email we sent you. It will explain what the problem was and what needs to happen before the account can be reinstated. You can learn about our policies.

Hello and Welcome to FixYa!

Facebook have quite the draconian usage policy and at any point in time you might find yourself the proud owner of a disabled Facebook account. Do not despair for there are ways to reactivate your account without having to re-create a different one.
Just open the following link, Give all the related information which is required and it can help you to enabled your account.
CLICK HERE
If you want to activate directly your account then All you have to do is send an email to disabled@facebook.com inquiring about the reason that they disabled your account for (usually it's a hater reporting your profile to be in violation of the EULA of Facebook) and explain your willingness to remove the violating content and if it was just a "clerical error" to reactivate your account. After sending mail, your account will be enabled in less than 3 hours

For Further assistance, I am here to help.
Thanks and Keep Visiting FixYa

Your account can be disabled for a variety of reasons...usually for a violation of their Terms of Service (TOS).

To ask that they reactivate your account, you can use this form. From what I found while researching this for you, it could take 2-5 days or longer for them to respond:

http://www.facebook.com/help/contact.php?show_form=disabled

This happened to me one day. The next day my account was back. Hope this is the same for you. I think they have gltches sometimes. Good luck