I upgraded to my account but form is still showing "Over quota" error message.

I used jot form from 2013 to 2014 and then went away due to errors and complications. Now I again joined with the same account and paid 5$ per month package but still it says upgrade your account and it is not accepting data stating over quota :-S

I did test your last edited form and did not find any issue with that. I was able to submit your form successfully and it did not display any form over quota error message. Please check the screenshot below:

Can you please share a screenshot of the error message what you see when form is submitted? You may like to take a look at the following guide on how to upload image in forum post:  https://www.jotform.com/help/438-How-to-Post-Screenshots-to-Our-Support-Forum

It seems you have upgraded your account to storage plan. Please note that storage plan only gives you unlimited submission storage space but does not increase your submission or uploads limits.