I can't see any issues with changing the bevel on any of your shapes. Are there any shape in particular you have problems with?

Two general things to look out for though:

• Are the shape really on the sheet you think it is on? Use either Info -> List to check, OR bring up the sheet and effects dialog, and hide ALL the sheets except the one with the bevel you want to change. If the shape disappears when you hide all sheets and click apply, then it isn't on that sheet-
• Make sure you don't overdo the values. For example, the mountain-like shape on the contour 2 sheet has a bevel size that is way larger than the shape. When the bevel is larger than the sheep, it will always result in a bevel from the middle, so even if you halve it from 200 to 100 it will have no change in appearance, because 100 is still to large. Try setting it all the way down to 2 however, and it will start to show changes.

When you say "hide all your layers...", do you actually mean layers, or are you talking about the sheets?

Also, hiding the map border (The map border is on the MAP BORDER layer, and the BACKGROUND sheet) can in some cases have unforeseen consequences, because CC3+ uses the map border to calculate the extent of the export. I have seen cases where that resulted in a temporary image ImageMagick couldn't convert in the final step, so please try as roflo1 suggested and do a rectangular section export instead, and see if that gives different results.

While not a good thing, this is far less serious than the browser like to claim. In this case it is just an expired certificate (but otherwise a valid one), so it is safe to ignore the warning and proceed. Certificates always have a set expiry date, so an expired certificate doesn't have anything to do with hacker, and the message that the information isn't private is actually a lie, because even an expired certificate encrypts the connection.

Of course, ignoring browser security warnings IS NOT a good thing, and not something that should be done unless you are absolutely sure it is safe to do so. Although it is surprisingly often completely safe (as part of my job, I have to do it all the time), it could also mean that there is indeed a problem, like a hacker playing man in the middle or having taken over DNS and redirecting you to a fake site. If you are even just the tiniest bit uncertain, wait until someone has fixed the certificate which should happen soon.

I wrote a blog article about ways to search symbols:

If you're doing overland mapping, there are generally symbols available for marking spots on the map in the :CC2BO: category.

When picking file type in the save as dialog, use any of the "rectangular export" ones, they will prompt you to define the rectangle of the export after hitting save.