Oleksii, good day.
these are several different questions:
"Where can I see the occupied memory volume on the company's cloud?" - you can see the space on the server in
The server load control panel is here /app/system-statistic/
"Images took up about 5GB of cloud storage. Paid for storage the other day. Also temporarily removed products and images to reduce costs." - information about the megabytes that are included in the tariff for the data correctly specified on your screen.
"But in the company information, the volume did not change after the deletion." - you assumed that deleted information is immediately deleted from the database. However, by default, the soft delete principle is used to avoid accidentally deleting important data. In your case, to permanently delete from the database - you need to install the paid Component "Data Cleansing"
https://1b.app/ua/app/data-remove/ ($39 will be charged monthly)
in order not to pay - you have the option of transferring the box to your own server
https://1b.app/ua/prices/, where all responsibility for the server and data is on your side.