Yikes! Blocked by Pinterest! Why? How? What?

Yesterday, I found something of interest to pin. When I tried pinning the following message appeared:

Not what I was expecting.

Wow! That's a lot of Pins????????? 

It was only one. And note the message is incorrectly formatted so the Learn more link doesn't work. I copied the address, pasted it into the url field and found out the following additional information:

"If you’re seeing a continued error message when you try to comment, pin, repin/like a pin, or follow another Pinner on Pinterest, it’s likely because you’re being blocked by our automated spam detection system.

You could have been mistaken as a potential spam attack if you’ve been doing any of the following actions:
1. Commenting on many pins very quickly (especially comments including a link)

2. Posting the same comment many times (especially a comment including a link)

3. Following lots of users very quickly

4. Pinning, repinning, and/or liking pins very quickly - particularly repeatedly pinning things which all link to the same source

5. Using a link-shortener or a link-redirect, for example: bit.ly or other link-shorteners - try using the full link in a comment or pin description instead! Also try pinning from the original source without using a link-redirect."


I have done none of these things. In fact, I have been on vacation for a week, and although I did some pinning, I didn't do anywhere near my normal volume.

The site provides a method for submitting a request for review. I have followed the directions, received an automated reply with a repeat of the same directions, followed them again and am now waiting.

Has anyone else had this problem? Solutions? Ideas?

Thanks!
Marji

Update:
It took about 14 hours but this afternoon my Pinterest account started working agin.  I did follow the "Submit a request" procedure.  I received an automated reply requesting me to do it again, and then I waited. I did try to locate a help line, or a phone number. One place did list help@pinterest.com as a help line but my email was rejected.

Bottom line: I am pinning again- but don't know what caused me to be knocked off.