Hi Manager,
Sorry to hear that. The minimum OS requirements changed with the Top Eleven 11.14.1 update and iOS versions below 11 are no longer supported. More information on this change was shared in game and in this FAQ article. You should be able to load your club on Web Browser if you linked it to your FB account, or transfer it to a different device via Game Center. If you need any assistance with it, feel free to get in touch with our support team through this link.
Best,
Taliyah25