Cannot print the point of sales invoices from epson printer using ipad as a device while I can print from any other device because of the security policy of safari and the error message is "Please check if the printer is still connected, if the configured IP address is correct and if your printer supports the ePOS protocol" Then I enabled the ePOS from the printer when I access it and still the error occurs in the ipad. 

Please kindly see if there is any solution to the problem.