If the game is still cras hing on the iPad, I’d separate the two problems rather than trying to restore the account from the laptop first.
Before reinstalling anything, check which service the old account was linked to (Game Center, Facebook, Google Play, or Plarium ID). On the new device, use that same service from the Account/restore section. If the old account was never linked, I would contact Plarium Support instead and give them as much identifying information as possible, such as the Kingdom, Town coordinates, Order name/tag, player name, device used, and any purchase receipts you still have.
Also, don’t create or overwrite accounts randomly while testing, because it can make the recovery process more confusing.
I’d also recommend going through this cursive account recovery guide before trying anything drastic. It walks through the different recovery options and explains what information you may need if the account isn’t linked to any of the usual services.