Re: Signatures

Last time this happened it was because the URLs for the fiction covers changed. Anything that was cached still showed okay (so other users had to point out your own was broken).

So maybe try replacing the image link?

Edit: found the old thread;
Unofficial RR Beginner's Guide
Science fictionSlice of lifeFanfic
(Complete)(In progress)(Intermittent) 

I also have fictions elsewhere. Fanfiction: FFN (Cinn), AO3 (Lilitia). Original: FictionPress (Lilitia).
Credit for avatar image - a doll creator on Rinmarugames. Unfortunately now defunct.

Re: Signatures

Right now, you're using a CDN (content delivery network) link from Royal Road. These links are dynamically generated and can change whenever RR updates the site or clears the caches. Basically, they're not meant to be permanent.

I would try hosting your cover on an external site like imgur instead.