Can't update Sydney Pro, I'm restricted?

I can’t update my theme ( Sydney Pro ) and suspect that the problem was caused by a well intentioned support tech who was trying to help me get rid of the white background in my posts… I prefer a light beige to white since it is easier on the eyes.

I am an artist trying to make a living from the site who doesn’t know a lot about software. Can you help me? I am restricted from updating at this moment.

Hello there,

If you’re running older version of Sydney Pro – older than 2.0, you’d need to do the steps as outlined in this documentation.

Regards,
Kharis