Hey thanks for the invite! Love your art!
Still unable to join the set? I sent out another invite. I think You have to open up Your flip and select edit set on the flips page.
Hopefully the "%20" will be gone within a day, I've had the same thing happen with other new sets that I've created as well.
You might want to try and join the set now :)
Thanks for collecting my flip! =)
Thanks. And welcome to Flipshake
Welcome to Flipshake!