All winning tickets will become void/invalid after December 31st, 2023. Any cash vouchers can be sent to the address below. Along with the voucher you should include your first and last names, address, phone number, and email address:
Player Services
Attn: Risk Management
PO Box 8510
Lexington KY 40533
https://irb.illinois.gov/rules/rules-for-wagering.html