I reached the 5 its limit to e-file, what's the best thing to do so I can still e-file

[xmasbaby0]

There is nothing you can do to e-file more than five federal returns.  That is the IRS limit.  If you have more federal returns for other family members, etc. they have to be printed, signed and mailed.  They cannot be e-filed.

When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s.  Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return.