Urgent help w signature

[#1]

I thought I created my signature even seeing an email approval: but I can't use my approved signature on an urgent pdf from SBA. I now have my acrobat reader on my iPad but it does not insert the official signature. 
please help. How do I fix and do this?

[#2]

I thought I created my signature even seeing an email approval: but I can't use my approved signature on an urgent pdf from SBA. I now have my acrobat reader on my iPad but it does not insert the official signature. 
please help. How do I fix and do this?

[#3]

What kind of signature?