@KikisGirls
ACS is acidified copper sulphate used to treat sour crop.
@Gayle R463
I appreciate that you are getting desperate but it helps if you continue to update your original post rather than start a new post which contains almost no information.
Unfortunately your first post on the subject is not overly clear. You say she was laying rubber eggs earlier in the summer..... what do you mean by that.... some people consider a shell less egg a rubber egg, others consider a lash egg to be a rubber egg. If it was a lash egg, then that would indicate that she has salpingitis and if it is now restricting her digestive tract and causing her crop to be slow/impacted, there may unfortunately be little hope. If they were just shell less eggs then that is less of a worry as sometimes this happens towards the end of a hens cycle as she approaches moult and her body's nutrients are becoming depleted. Abdominal swelling would suggest salpingitis. Check the area around her vent and between her legs and compare with your other hens to get an idea of any abnormal swelling in those area.
If it is not a reproductive issue (salpingitis or internal laying or EYP) that is causing her slow crop, then I would look towards it probably being an impaction. I appreciate that you do not feel able to do surgery, but if there is fibrous material in there that is all matted up into a big soggy tangle, then it may not be possible for it to break up or be regurgitated or go down through her system before she starves to death. And in fact that fibrous material passing into her gizzard as one mass will clog her up completely and kill her. Also, giving her a wormer will not help, if her crop is impacted, even if she has worms, as the chemicals will not easily progress through her system to kill the worms.
ACS will treat sour crop which is a yeast overgrowth, but it will do nothing for an impaction and after 7 days, I would have expected it to clear a sour crop, so it sounds like you can probably rule that out.
So, the options we have are that there is something further down her digestive tract backing her up..... reproductive tract issue or tumour (usually some swelling would be noticeable) or possibly worms (a faecal sample can be examined by a vet or laboratory for worm eggs called a faecal float or worm egg count) ........
or ..... she has an impacted crop that is not responding to stool softener or palpitation and needs to be physically removed.
If she has lost as much weight as you say, then time is running out. Please get back to us with results of physical examination of abdomen and vent, and more information on those "rubber eggs", so that we can try to narrow things down a bit. Also, you mention using Strike III. When was that and for how long were they treated?.... that might rule out worms.