Thank you for reporting the issues! I'll investigate and get them fixed for the next update.
The replay must be bugged out, you can back out of it by going to the menu and pressing End Replay. This will send you back to your playthrough. I'll get it fixed in the next version.
Don't worry about the book Luna mentioned, that is included in the content to come. The guide for fishing is indeed the only book at the moment. Salmon is used in one event at the moment, but I have plans for use of other fishes. There is currently no way to check the reputation, I'm working on a menu for that (and abilities & feats).
As far as the guild work goes, how well you do matching adventurers with quests has a direct impact on their grades and consequently the reward you're given and/or progress that is made on quests.
I plan to rework the trading system as I'm not happy with its current state.
Thank you for the detailed comment! Always happy to read through these and respond :)