tomtom2357 wrote:The problem with that website is that it won't always have the right answer, I tried a few coded sentences and it did not come up with the right answer.
It quite likely doesn't have many proper names (such as places that may be present in minecraft). It also may assume that there's no punctuation substitution, the presence of punctuation characters in the encoded version may lead one to believe that here is punctuation encoded. Try guessing where punctuation may be and drop a letter or two.
The format of the second puzzle (assuming it's a straight cryptogram) makes it unclear if the top line is one word and the spaces are substitutes for a letter, or if the top line is 3 words.
Also, it appears the linked site is only a substitution cryptogram solver and doesn't attempt to detect other encryption methods. The puzzles appear to be straight substitution cyphers, though, so you're probably safe with it.