Hi friends,

Would you please tell me what the problem is in this letter?

Children are not our target audiance but they can see The magazine which we are going to publish our advertisments.

Dr. W said becarful don't address something which harm the children and don't use a character that children love.

Any how PAUL if you need a writing matterial ( or if you need me to write something about this) you should wait until I get all the Materials. ( in the futer I will get the matterials).

Thanks
1) Check your spellings. You have 5 spelling mistakes.

address is an incorrect word choice.

There are a few other errors but try and fix these yourself first?
I checked the spelling,

Thanks,

Children are not our target audience but they can see The magazine which we are going to publish our advertisements.

Dr. W said be careful don't tell something which harm the children and don't use a character that children love.

Any how PAUL if you need a writing material ( or if you need me to write something about this) you should wait until I get all the Materials. ( in the future I will get the materials).
Students: We have free audio pronunciation exercises.
Children are not our target audience but they can see T/the (is 'The' the actual name of the magazine, if so keep the capital letter, if not, you need a lower case t) magazine in which we are going to publish our advertisements.

Dr. W said to be careful. Don't write anything which might harm children reading it, and don't use a character that children love.

Anyhow PAUL if you need some writing material ( or if you need me to write something about this) you should wait until I get all the materials. ( In the future I will get the materials). (I'm not too sure about your use of the word material throughout this section. 'Writing material' is either the topic/research you are writing about, or could be physical materials such as paper.)Sometimes magazine articles etc themselves are referred to as 'material' but without the word writing beforehand).