Dear Qwizzie and Xkcd,
I invited a friend who is very knowledgeable on computers. He tried some things, but in the end, he played around with the protx register_evo string (adding quotes etc.) until the transaction went through! We still have not figured out what went wrong with all the previous strings and attempts to do the protx register_evo command. In any case: the Evo node is now synchronizing. Fingers crossed. I want to thank the both of you profusely for your time and kind help. Lessons learned: the Protx register_evo string is very finnicky! Thank you for helping out. Really appreciate it. I don't know where Dash is heading, but I will keep at it until the bitter end (hopefully the ending will be sweet though).