The original WP Remote tool and features were built by Human Made and acquired by maekit in 2017. BlogVault's announcement says the current version of WP Remote “will be discontinued and retired on 31st January 2020” to be “replaced by BlogVault’s website management features.”
Existing users also have the option to migrate directly to BlogVault's site management service.
I talked to Akshat Choudhary, the founder of BlogVault, about this acquisition at PressNomics. He told me he wanted to acquire WP Remote the first time around, but it didn't work out. I think he'll do really well by this tool, and BlogVault will be the right home for folks still using and relying on WP Remote's functionality.