The first hint to crack the puzzle "Enter this series of characters to log in" is:

It is a word which contains 8 letters

The second hint to crack the puzzle "Enter this series of characters to log in" is:

It starts with letter p

The third hint to crack the puzzle "Enter this series of characters to log in" is:

It ends with letter d

Looking for extra hints for the puzzle "Enter this series of characters to log in"

Click on any empty tile to reveal a letter

The answer for the puzzle "Enter this series of characters to log in" is: