These two work for me:
https://eds.counterwallet.io/ and
https://robotlovecoffee.counterwallet.io/ but I've never actually used them. So, if you have crypto assets on this platform,
I think if you have a chance to release them, it's better to do it or take advantage of it and transfer them to another OP platform.
Because if you don't do it, you might not be able to get it, and you said that the wallet has not been very active for 8 years, and the risk of the assets you have there is quite high.