Hi, my L2 visa expires in 2024 and EAD expires in June 2021. I applied for my EAD renewal in Jan 2021 however only received the receipt notice somewhere between late Feb and early March. I filed for an EAD expedite request over the phone in May 2021 and provided info about my employment with a healthcare company which is contributing towards the fight against COVID. With this info I got my EAD approved the next day.
Hope this helps those who are also part of team fighting against COVID and facing similar work permit issue! Good luck!