If the rent sign isn’t there, you can always use commands to rent or unrent a shop. You can do /as info region s(number) or /as info region while standing inside the shop region and click on the rent (or unrent) button in chat that will show up from the command. Another way is to do /as rent s(number) or /as unrent s(number). If you want to use a sign, you can go to the wall of signs at the shop hub, find the shop you want, and click the sign to reach. Let me know if this doesn’t work and I can help find out why!