Find a better friend.
If you gave him access to the files, I assume it's via SFTP or SSH? You own the hosting I assume so do whatever you can to revoke the access to the hosting and then you can work on reinstating your own access to the forum itself.
I assume it's taking the og:image metadata for the image. Example:
Source shows an og:image and an og:image:secure_url however only the og_image is used therefore it's causing browser warnings for unsecure images.
This has nothing to do with using a proxy or not either.
Anyone planning or currently developing a map addon yet? There's currently nothing really available for XF2 beyond the free one. I've used several and my last one by XenFactory was perfect in XF1 but unfortunately they're not really developing addons anymore.
Doesn't really even need to have a...
There's an importer for SMF but you'll need to import into XF1.5 then upgrade that to XF2. The importer is quite easy and you can just duplicate your database and content directory to another location on your server and test the conversion.
Linode have similar block storage options and pricing as DO. The difference being it's a network attached SSD storage separate from the VPS volume and it's fantastic for allocating set amounts of additional space for a set cost, whilst being very flexible in expanding that attached storage size...