From my recollection the issuing bank is located in Lebanon (or was). At one point tied back to Carmen Media/MGS and Payspark support came from the UK. Maybe this has all changed now, maybe it hasn’t.
Given you have no idea who is receiving your passport scan, how it’s stored or even if it’s verified then distroyed. I personally wouldn’t be encouraging you to send it.
Then again IDK how much cash you have tied up in Payspark. If you do decide to send it, make sure you send it in Black & White. Never send it in colour.
If anyone ever disputes it’s not colour then it could be falling into dubious hands.