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Rated games don't have them. If you only choose "Previews Yes" or "Preview vs Bot" you should get them (for the next 15 hours).

It's a way to Undo more than the last step without having to click Undo several times: you can click on the line in the log that you want to go back to.

There was and is an option to switch on "Transparent Way buttons".

The behavior is correct:

"If the previous turn wasn't yours" is checked when you play Voyage/Outpost. So playing Voyage on a Voyage turn will not give you an extra turn (similar to Outpost).

Outpost in addition says "If this is the first time you played an Outpost this turn" such that the second play is not effective. Voyage doesn't have such a clause.

Probably you're looking for games with Previews. They default to unrated even if rated was selected. You need to choose "No" only for Previews to get rated games (but will also not get previewed cards).

I prefer the current location and style over the old one below the log.

^

The reasons for the effects that happen at the start of the turn used to be logged in brackets e.g. (Wharf).
That's a bit bugged at the moment. Drawing cards tends to be logged, but not for (e.g.?) Dungeon. Other effects (Fair, Barracks, Coin from Caravan Guard, +buy from Wharf...) are logged without giving the reason.

Yes, the ratings were always updated from day 1. So it became more over time but adding e.g. one month now would not be different from having it run each day for the past month.

That is correct. Think of it as still being in this time window where you have gained a card and are reacting to it.
(Otherwise you could also not prove that you already had both Sheepdogs in hand, if that was the case,)

Probably those 2 cards were Estates, which being Victory Cards you can't trash with Enhance.

That is correct behaviour:
The important thing to note is that you don't "play Crown as Treasure" (or "as Action"). You're playing an "Action-Treasure" in your buy phase (and you can do that because it's a Treasure). If that also happens to be the first "Action" that you play in this turn, it gets doubled by Citadel.

It's one of the options that you need to activate in the Regular Options tab:
"Use autobuy:" Yes

Your game number is too short, but I've done it plenty of times in other games.

Play 1st Charm: select "Gain Card"
Play 2nd Charm: select "Gain Card"
Click the card to buy
Click the first (differently named) card to gain
Click the second(differently named) card to gain

In general, you need to play all Treasures before buying a card, because you can't play them afterwards. (unless Villa or other edge cases)

So you need to first play all Charms and select how often you want to gain a copy. Then you buy the first card (e.g. Gold) and the game engine asks you which copies to get. You click at them one after the other. In your example: buy Gold, click on Nobles, click on Nobles again.