If it is related to the Market so please find below the information related -
Where can I see my purchases? https://www.mql5.com/en/forum/9950/page70#comment_2564931
How to Install an Earlier Purchased Applicationhttps://www.metatrader5.com/en/terminal/help/market_buy
If the issue still exists so write to the service desk providing all the information for them to check.