I use Ubuntu 14.04 os and also use Ubuntu web browser for open paytm.
but now I can't open this site..
the error is "please enable HTML5 storege to continue"
how to solve it??
The page you are trying to load seems to require a technique called Web Storage.
...software methods and protocols used for storing data in a web browser
As it is somehow unclear which page you are refering to and which browser you are using i would recommend the following:
As a first step try to load your side in either
Both browsers should support Web Storage out of the box.
Here is a demo side which tests your browser storage capabilities