I am so frustrated with selling plants on Ebay right now with their seller-initiated order cancellation penalties. I think their system is broken when selling plants. What do you think?

I recently started to sell plants on Ebay, and after about a year, I realized how broken their system is. Sometimes, things inevitably happen to my physical plant inventory quickly that render some of them unavailable for shipping. For example, I might get a racoon or opossum that decides that it's a great idea to snack on my plants in the middle of the night where they hang out in the backyard to get some sun. The problem is that they might mess with how many plants are actually available and some users inevitably order more than what are actually available. Someone could order too many plants in the middle of the night while I'm asleep and unable to accurately adjust my online inventory.Whenever this happens, I thought it was okay to simply cancel and/or partially or fully refund the customer plus their shipping costs out of my own pocket for their troubles on a case-by-case basis without penalty. Not problem, right? WRONG! I learned harshly today that Ebay wants less than 2% all of their transactions to be "defective" at all times in order to comply with their seller quality standards. Otherwise, they might penalize, or in more extreme cases, you could even lose your seller account all because of seller-led order cancellations per period of transactions.Some of the pushback I got was that I should just intentionally have more in "backstock" to subsidize losses and invest more in protective infrastructure, like pest deterrents and so forth, but I think that they are missing the point - it is statistically inevitable that some catastrophic event, such as a major storm or a deer rampaging through my nursery or something else would basically void all of these efforts, and I would be back in square one with customers overordering items that are no longer viable.I understand that quality control is important, but it is really difficult to have less than 1 out of every 50 (referencing the 2% threshold from earlier) plants in my inventory to not run into an issue like that - nevermind the fact that there are so many different varieties of plants that I have in stock in the first place that are all susceptible to different and random potential overnight pests or problems.What do you guys think about this? Am I overreacting? Is there a better platform that is more understanding of these potential problems? I've been considered Etsy or investing in my own e-commerce website. see hubwealthy.com/wealthy