HI @lisa@41 and welcome to the forums from another long term childhood diagnosed T1.
Yes, things have certainly changed from when I was diagnosed as an 8 year old in 1970
And I certainly remember the rollercoaster from my younger years, though modern tech means that I'm (a bit) better controlled now (usually but not always)
I'll look forward to reading your posts.
Just a thought, but are you sure that it was this forum you were a member of before and not the DUK one? (diabetes.org.uk) ? If it was this one and you remember your username we can ask admin to give you access to your old account...