Can I join your alliance
You likely got kicked for a valuable reason
I always tell players to ask questions before joining an allly: do you randomly kick people? Do you have rules I need to follow? If I need to miss time (school, vacation, illness), how does that work? There are many many alliances out there looking for players, so you can be picky. As a leader, I do my best to ensure new members are a good fit -- from both my perspective and theirs.