We took over the running website a year ago and part of their site is an SMF forum 2.0.13

It has installed:
SMFPacks Mentions   1.4.4
SMFPacks Two Factor Authentication   1.0.3

I presume these were purchased through SMFPacks.com using an account I don't have access to from the previous developer.

My question is, when I look at the current packs for sale I see no change log or versions to know if it's worth upgrading or not.

We currently have an issue where if someone mentions a name with a space in it the wrong person will get mentioned.
For example:
Two users
@joe
@joe bloggs

If a post is made mentioning @joe bloggs - @joe will get it, not joe bloggs.

Hey,

There has been two big upgrades for mentions: 1.5 and 2.0, about Two Factor currently it's in 1.0.8, plenty of bugs were fixed in those releases and PHP7 compatibility was added.

Sounds like it's upgrade time then.

Yes, sounds like a good time to upgrade!