Thank you for your advice, it’s very appreciated. I tried a putty session, yet connection refused, even with HA core running. There are some comments SSH connection refused
Hence, looks like I look myself out when stopping HA, yet need to stop HA to make even basic selects on the DB (via Samba), not mentioning deleting erroneous sensor entries
(I’m reasonably fit with algorithms and databases, yet I’m absolutely useless with anything regarding installations 
)