Auntieflo, depending on which email provider you are with, you should be able to reset your password as you have the ASUS. You will need to use your internet browser as if you are trying to read your emails online but, as you have forgotten your password, enter your email address as requested. Then when your password is requested, click the 'Forgot password?' link. With luck, your ASUS email client should receive a link requesting you to reset your password. If you follow the instructions, you should be able to change your password to a new one that you have made up for the purpose. You will have to change your email password to the new one on the ASUS to continue to see your emails and you can add your email account details (your email address and new password) to your iPad.
There are some pitfalls though.
Email providers like gmail may have previously asked you for additional information (for extra security) before resetting your password. It may be a mobile phone number to which they can text a security code. It could also be that you would be required to answer some security questions, such as 'Where did your parents meet?'. What was the make of your first car? Beware, if you have provided this information in the past, your answers must be in exactly the same format, capital letters, spaces, commas, apostrophes etc. As part of the reset, you may also have to provide this information for future use, so make sure you make an accurate record of any information you add. You may also be asked to add a recovery email address, which means a different email address if you have one.
If you are stuck, Google 'resetting pasword for ????' where ???? is the part of your email address after the @ symbol.
Passwords are the keys to your online doors. Make sure you know which password unlocks which set of application data (door) and record it accurately. Any other information you provide as part of password security is just as important too, just 'jotting it down' somewhere is not good practice.
I hope you resolve this. If you can't reset your password, you could set up a new email address on your iPad, then using your ASUS, forward any emails that you want to keep to your new email address, then let people know you have changed your address.