After you see this error check AbanteCart error log in Admin and post here. If you problem resolved automatically look like it is server (hosting) related issue

Yes, sorry, fixed rate shipping.  What is happening is when I save the product information, fixed rate shipping automatically goes to 0.00, even if I delete the amount in fixed rate shipping, which makes it override flat rate shipping rate.   That is the problem.

0.00 for fixed rate mean OFF. Not sure why Flat rate stop work on your side.
What is your default currency?
Do you have any shipping related errors/warnings in AbanteCart error log?

Hi.

Solution here http://forum.abantecart.com/index.php/topic,1945.msg7789.html#msg7789

I have tracked down the source of the problem, sort of.  I notice that when I go into the products to edit them, the flat rate shipping is set to 0.00.  When I delete it and click the CHECKMARK right beside it to save, the flat rate shipping goes blank and the flat rate shipping amount that I put in the flat rate shipping extension works, AS LONG AS I don't click SAVE at the very bottom of the page.  But, if I click on SAVE at the bottom of the page, the blank box changes to 0.00.  So, anytime I would have to edit that product, which would make it necessary to click on SAVE, it messes up shipping by automatically changing it to 0.00.  Can someone look into this?  Is it a bug?  Attaching pics..

Thanks!

When you edit product there is NO Flat rate shipping price. See your screens this is Fixed Shipping Price - this setting allows you to offer an exact shipping price for individual products (any shipping method).

Please post screenshot with shopping cart issue (not product settings) because we can not replicate issues with quick save (aka checkbox) and SAVE button at very bottom. In both cases if delete all from Fixed Shipping price - Flat Rate works

I tested my site using 1.1.7 I created 2 separate accounts, 1 on the computer and 1 on the smartphone. I then logged in 1 of the accounts then proceeded to close browser from my computer without logging out. I then used my smartphone (not connected to wifi) and launched my website in my chrome browser. I then proceeded to log in and the account that was logged in on the computer (but never logged out) was visible on my phone.

Hi.

This is new Chrome browser feature sync - Google has updated its Chrome browser, adding the ability to sync browser tabs across multiple devices to make a single session of Chrome accessible as you move from desktop, to mobile, and back again.

Try manual upgrade http://docs.abantecart.com/pages/upgrade/manual.html

Make sure you type 80% (not 80)

I have Abantecart 1.2 and  the width of  storefront in the backoffice doesn't work . 100% or 80% is  same. The theme is the default. Some solutions?
Thanks

Hi.
Clear browser cache after changes save. Works on my side AbanteCart 1.2.0 FireFox browser