The EEPROM is type of memory in the Sculpfun S9 that stores settings.
If something goes bad reading it once, it could be a fluke. If it’s failing to read on more than one occasion it starts to look solidly like a hardware problem.
I feel that it’s time for you to reach out to Sculpfun for assistance. I think it would be informative for them if you linked this forum thread in your communication with them to help guide their service decisions.
Another user had Error:7 on a different machine. Here’s what Oz had to say about it.