Simplify the following text for a Grade 8 native English-speaking person.
Original: An attempt to patch up the problem with railway sleepers and soil failed to impress the Football Association , who wrote to the club on 15 May 1935 , `` saying The Nest was no longer suitable for large crowds and measures must be taken '' .
Simplified: They eventually wrote to the club on 15 May 1935 , saying '' The Nest was no longer suitable for large crowds and measures must be taken '' .