Typoglycemia (a portmanteau of “typo” and “hypoglycemia“) is a neologism for a purported recent discovery about the cognitive processes involved in reading text. The principle is that readers can comprehend text despite spelling errors and misplaced letters in the words (Wiki)
90% of WiFi Pairing issues are due to typo mistakes that your brain reads as the correct, but the reality is the spelling or number sequence is incorrect. You look and it reads correctly (in your brain), but you see really what you want to see and not what’s really there.
Look at these name brand images-
A second set of eyes is always a good idea if your WiFi is not connecting.You can also check the network on your phone to compare the case sensitive spelling of the network and password names. Make sure that you are connecting to the correct network as well. You might be typing in the correct dead on password, but if you are trying to connect to your neighbors network, it’s not going to work.