Fellow Africans please don't waste your time making an application to Writerbay. This company represents a bunch of racists. They claim that that samples are evaluated but the truth is that they are not.
If you have applied and are waiting for response you can read this and take it as the official response because that's what they sent out to all African applicants. Also carefully screen their writing and ask yourself if this evaluator is capable of evaluating anybody's writings.

Dear Moses,
We have evaluated your sample essay and we think that in general it is well written;however, there are instances of confusing wording, and problems with grammar and vocabulary. Unfortunately, your writing skills do not meet our requirements. That is why we were forced to deny your application.
If you wish you can try applying again, but in no less than a year. We think that it is not possible to significantly improve one's writing skills and knowledge of English in a shorter period of time.
Thank you for your interest in working with us!
Best regards,
Alison
Writerbay Management
Dear MOSES OLUOCH,
>
> Thank you for your interest in working for our company. We really appreciate your great efforts and dedication. Unfortunately, your writing skills do not meet our requirements. This might be due to the fact that your work contained too many mistakes (grammatical or stylistic), plagiarism, or that you didn't cover the requested topic. We are very sorry to inform you that you cannot work for our company as a writer.
> Best Regards,
> Support Team
>
ear MOSES OLUOCH,
Thank you for your interest in working for our company. We really appreciate your great efforts and dedication. Unfortunately, your writing skills do not meet our requirements. This might be due to the fact that your work contained too many mistakes (grammatical or stylistic), plagiarism, or that you didn't cover the requested topic. We are very sorry to inform you that you cannot work for our company as a writer.
Best Regards,
Support Team
writerbay.com