Unfortunately, you cannot share a VPN connection over a hotspot. Hotspot traffic is controlled by the operating system—not the VPN app—and the OS always routes shared connections through the physical network adapter (Wi-Fi or mobile data). Because of this, hotspot traffic bypasses the VPN tunnel.
This means that even if your device is connected to MysteriumVPN, devices using your hotspot will still access the internet without encryption. This limitation is built into Windows, macOS, Android, and iOS to maintain stable performance and connectivity.