Activating an old version of PhotoShop

Question

I just recently had my computer cleaned up, de-bugged, etc.  When I got it back and tried using Photoshop CS 8.0, I got this message:
"Your computer's configuration appears to have changed since the last time this product was activate.  To continue using product, please click OK to activate again."
That link took me to an activation box.  Only when I try the automated activation, it does not work and I do not get an activation code.  The telephone activation number provided doesn't work, and has a message saying it no longer does telephone activation and refers me to the website.  When I tried an Adobe help chat, I was told the activation count for the product is shut down and was referred to this forum.
When I asked if there was a phone number I could call for help, I was told no.
This is VERY frustrating!

Answer 1

Thank you for your help, John.  Will there be a fee?  I don't want a newer
version, just want to be able to use the one I have!
Is the download something that could be done on someone's computer with a
high speed internet connection, then put on a flash drive and put on my
computer?  If the download is over 10.0 MB, my server will not support it.
I am going to share all this with the computer consultant that cleaned up my
hard drive and messed things up in the first place.  I think she should be
the one to fix the problem she created!  The program was working fine before
she did whatever she did to my computer to clean it.  Now I get the message:
"Your computer's configuration appears to have changed since the last time
this product was activated.  To continue using product, please click OK to
activate again."
And since that activation process is no longer available - I'm stuck!