What does it mean when inside a circle there is numbers with a red mark?

For example: if there us a 3 inside the circle with a red line across, it means there are no three letter words.

I think the circles you're talking about are under the various types of Helps you can spend your coins on: The Hint (100 points/coins), the Rocket (300 points/coins), the Bullseye (200 points/coins) & the Bees. When there's a red circle with a number in it on top of one of the three helps, it means you have that many of that help to use for free. When there's no number, you can still use a Help, but the program will deduct the appropriate number of points/coins from your total. You occasionally get free Helps when you open one of the 3 gift boxes that pop up each day, OR you can do what the game designers want you to do and BUY packages of the various Helps by clicking on the shopping cart in the lower right-hand corner.

As for what the Helps do, the Rocket, Bullseye and Hint all reveal letters in the puzzle.

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 The Rocket reveals an array of letters in several different words, unless you only have one word left, in which case you’ll get them all in one place.

 The Bullseye reveals only one letter but you get to pick which one. So, you can choose one that’s at an intersection in the puzzle so it adds to two words, or one in a word that’s really challenging …

 The Hint reveals only one letter and the program chooses which one. It usually seems to be the first blank letter of the last word you accessed by completing an intersecting word, or the first blank letter of the only word you have left to solve, but I can’t guarantee that.

The Bees are different.

 They don’t appear on your game screen unless you have some available to use.

 You can get several free ones at a time by opening the lucky package on the Daily Gift screen, or you can buy packages of them from the shopping cart.

 You can’t control how they’re used.

o With each new puzzle you open, a number of Bees will fly up and land on miscellaneous letter spaces.

o Each time you complete a word with bees in it, that number of coins will be added to your “Brilliance” score and to your point/coin total.

o You can’t control how the Bees are used. Both the number of Bees added to a puzzle and where they are placed are determined by the program.

oBees will be used on each new puzzle until you’ve run out.