My Instagram and 15-Year Facebook Account Suspended Unfairly

My Instagram account was recently suspended, and, along with it, my 15-year-old Facebook account was also deactivated. The reason cited was a community guideline violation, but I have done nothing wrong. I’ve invested years of memories and effort into these accounts, and this is the first time I’ve encountered such an issue. I cannot understand why my Facebook account was also affected due to an Instagram account issue. I am requesting that this error be corrected immediately and that both my accounts be restored. Please review this situation thoroughly and rectify this mistake.