Can't help with the first issues but the cranks are unlikely to just slide off. You can always try loosening the nuts and see if you can get them off by hand. If not then ask on here to borrow/buy a crank puller.
@Arducius started
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Can't help with the first issues but the cranks are unlikely to just slide off. You can always try loosening the nuts and see if you can get them off by hand. If not then ask on here to borrow/buy a crank puller.