I just opened up TT 2020 on my computer (the 3rd install only), got the error code 603, won't accept the license code. This has worked all of last year on this same computer, suddenly it won't accept the code today. I have spent an unbelievable amount of time on the phone with a support rep. She has told me to contact Costco instead of her, told me I needed to buy the software again, etc. etc. Terrible customer support!!! She is texting with someone else who is guiding her, but really long pauses and answers don't make any sense.
