I am out of Local Storage?

I'm trying to upload a show on OMHPS, but every time I try to work on it OMHPS gives me a pop-up that says I am out of local storage space? Please please please give me some help? I don't know how to fix this. I'm really frustrated, it just keeps deleting all my work. So far 10hrs down the toilet.

Update: I contacted OMHPS and they were able to give me another option so I could get around my browser's faulty storage. Thank you OMHPS Administrators!

Hi Adah. I'm very late with this, but if you see my reply, would you mind sharing which browser gave you fits and what was the workaround? Sounds like the kind of thing I'm bound to trip over eventually, and I bet I'm not alone. ;-)

Sure! I use Edge. The OMHPS Admins told me to "finish" the show so it was saved to their server. They did not approve it until I emailed them. I could continue editing at will until they approved it. :)