Hi,
I bought my Librem-5 seven years ago …. and I still waiting for delivery ! 
I had no problem with waiting for such an ambitious product, I liked the idea and the specs. Now it makes no sense from a hardware standpoint anymore, because tech is developing fast and there other options available. So I will ask Purism if they have a solution or refund my money.
They are all delivered in summer 2023. You could have followed how people receive it. I myself also bought in 2019 and was forgotten, but I followed the delivery-list in forum (we users created) and wrote to support, got my device just a week later in my hands. There where also people who got a delivery email where people had to confirm the delivery address is still up to date, but whoever not answered, did not get a device.
You still can ask Purism via email to get hands on your Librem 5 and in 1-2 weeks you should have it. Otherwise write a mail to get refunds. But you will loose some percentages of your paid money this way.
In terms of power the hardware was even 2019 outdated. But in terms of usability it is still strong enough to run Debian Trixie (or better Mobian and “soon” PureOS Dawn). Software wise you can run the most up to date software on it and L5 is still good enough and still the only device that runs in such an open hardware stage. But sure, there are also newer Linux phone projects with better hardware (and less openness), but you have to decide for your own what values more to you.
Yes if you still haven’t received it then something has gone very wrong. All orders from this period have been shipped. Contact support ASAP.
Most likely the delivery confirmation email was sent to you but something went wrong in that process e.g.
You will have to contact Purism Support but bear in mind that if there are endemic email problems between Purism and you that led to this problem in the first place, that might spill over into any communication in respect of Support. (If that occurs e.g. no response from Support after 1 week, post back here.)
Of course only you know what type of email address you used at the time of the original order and whether that email address is still current.