Thank you! I have spent so many hours on this piece that I am missing those mistakes despite diligently (I thought) reviewing it.
The translation of Beethoven’s repeat instructions “d. C. senza repetitzione e poi la Coda” is “from the beginning without repetition and then the Coda.” Does that need a “to Coda” marking as well?
Bar 176:
You still have an end repeat with no corresponding start repeat. Make that bar a start repeat only and it works.
You have the DC on the last beat of Bar 200. This skips over the repeat at Bar 200 as the DC takes precedence. Move the DC to the first beat of the Coda.