Your funds are entirely secure and fully accessible to you. They are not affected by the removal of MetaQuotes' MetaTrader 4 (MT4) and MetaTrader 5 (MT5) apps from the Apple store.
The MetaTrader 4 and MetaTrader 5 are just the software programs that trading platforms use for online trading.
Your funds are invested by a licensed, regulated investment entity and deposited with top-level banks.