Help for a gig content error

[abdullah3191]

I am a new user. I have been exhausted by hours after hours remaking my gigs and just after I complete gig description, this appears
Gig items info short title please use only letters, numbers or ,±& characters in the title
I as a fiverr customer, I am completely unsatisfied and my lot of time has been wasted because of it. I did everything as it says but it kept appearing and is appearing as for now.
Please fix this issue