Agfa Gevaert then modified their Rodinal by dropping the level of p-aminophenol but increasing the pH, making it far easier to manufacture, this is still made today in the same former Agfa factory and sold as R09 One Shot, Adonal etc and is no different to the Rodinal sold until recently by Agfa . Unfortunately because John of J&C in the US the Rodinal trade name can't be used any longer, he registered the it there Agfa is still in existance but have no financial interest in resolving trade name issues for companies they sold off.
So the question quite rightly is who made that R09. J&C were selling Calbe R09 in packaging mimicking Agfa Rodinal, and that caused legal issues around the time J&C ceased trading.
Why is J&C still interested in any of this, BTW? Seems like the right thing to do by giving up the name.
Part of the problem then was the names belonged to Agfa and not the companies that took over parts of the former consumer photo division and some coating/chemistry.
T RO9, Calbe/adox apho9,Etc does not do as well as the rodinal/ro9one shot/adonal we love today, It tends to crystalize badly and when I used it, and I did like the results, I would buy a litre bottle, the only size available at the time, but over two bottles I dumped around a third of the litre as it lost potency and was more crystal than liqued, so I went back to first of all Rodina, then RO9 one shot from Maco/Rollei, and never had a problem with it,I see lately that Adox are now selling the APH09 in 500 ml containers, amd the other ro9, which is the Foma, and is the same older formula as the APH09, is sold in 250ml containers, so if the OP was using the original RO9/apho9 type then it is possible to have a failure,
I always wondered is it RO9 or R09?
The swiss lab just was the last one in Europe to remain, there had been others.