For the most part I think both systems are pretty even to protecting the passwords that are on your actual machine. One pro that I can think of for vaultwarden is its less likely that malware would be able to find it since it runs on the browser. One con of this is however you have an additional attack vector that is the server vaultwarden is running on. Should an attacker gain access to that server they could easily replace vaultwarden with a malicious version and grab your password that way.

I’m more concerned about security. In most circumstances my data is really not worth that much especially when hardware is involved. They might be collecting some data for other reasons but I am not convinced that a significant amount of hardware has a malicious backdoor.

I have found that a lot of VPN filters to not always work. Whenever I get a screen that says blocked for using a VPN I can usually get past it just by changing my location a few times. It might also make sense to try a different provider since they are gonna have a different set of IP addresses.

I researched this a bit previously for proton and I think there was one case where someone had their account deleted but they were using the service excessively. I also read that if you do upgrade to a premium subscription support can help you merge your accounts together so I guess they kind of support it. If your making a few accounts even on the same IP you are probably fine just don’t login to them in quick succession and you will probably be fine. I do suggest you use an aliasing service when you can.

This is the perfect example of why privacy matters. No matter how much you trust a parent company one day when the investors come knocking they are legally obligated to liquidate all assets to the highest bidder. Today its 23andme tomorrow it could be discord, google, amazon, Facebook or any other tech company.

I use prisim mc. I forget why they forked but it works fine for me.

Keepass2android should be able to handle nextcloud sync from within the app so that might work better than on device sync. If your done with keepass bitwarden or proton pass are common alternatives