Why have you gone to all that trouble to register as a business before you've even a business to run?
Window cleaning is simple, why complicate it before you have a need to?
Dyslexia in terms of grammar and spelling isn't just certain words and phrases, it covers the entire English language. If you can spell words that are quite complex and yet not spell words that aren't then maybe dyslexia isn't the cause. Maybe, and this is not a criticism, and it's not something to be embarrassed about, it's because you can't spell. Lots of people are the same. Me included.
This website underlines words spelt wrong as you know already so there is no need to spell 'what' as 'wot'.