Thanks for the reply. The ip address causing the error message is 159.89.xx.xx. It was in the list of connected servers when I blacklisted it.
Since then I still had some issues so started again with a fresh install of Raspbian, new dl of Nxt 1.11.12 and still got the Deceptive site ahead message to the same IP, I clicked through and got back to the Nxt Dashboard and everything looked as normal so closed the browser and left the server running. When I got up the progress bar didn't look like it had changed :-/
Looking into it more I see that the DB is being saved on the SD card, thinking that it would be better on the USB stick I changed the config file (mnt/usb1/Nxt/conf/nxt.default.properties) and pointed to the USB and restarted everything.
I copied the original DB files from ./nxt/nxt_db/ to /mnt/usb1/Nxt/nxt_db but should they have been copied or should the folder be empty so the program puts everything in there?
There now seems to be another issue. Since making the DB change, when I login to the Dashboard I have zero balance + zero transactions. The lightening/connection icon isn't there, the message near the top says 'The blockchain is currently downloading. Please wait until it is up to date.' In the bottom right corner it's showing Downloading Blockchain (1428838 blocks left) but this is going up and not down!
I'll revert back to the original DB and see if that changes things and I did see someone post a similar issue so if I find that it might help.
Any advice welcome
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edit
Decided to delete all the Nxt stuff and start again. New installation, changed DB location before 1st run, started server - logged into Dashboard and I'm back at the beginning with balance and tx's + 1624208 blocks to go! DB now on USB. Hopefully this will continue without any further issues then I can start looking to see if I've got some free coins
