Hello, I am Maryna, a skilled Web Developer currently based in Belarus. I understand that you are looking for a freelancer to help you modify your website so that it generates correct Excel files with improved speed. Specifically, you need to improve the file generation speed and make sure that the files contain both numerical and textual data.
I believe I am the best fit for this project because of my extensive experience in website development and modification, proficiency in Excel file generation, strong understanding of data formatting and manipulation, ability to optimize file generation speed and most important thing is there is no specific deadline mentioned for this project. If you choose me for this job, you can rest assured that you will get quality work done on time while making sure that any necessary adjustments are made to ensure accuracy.