You should 'blame' your co-author (who uploaded the paper). The thing is that the right journal title is not listed in the RG database (and according to numerous questions here on RG there is still no option to include new titles).
Go to:
Deleted research itemThe research item mentioned here has been deleted
claim authorship and correct the details (most likely you will have to leave the journal title blank).
Best regards.
PS. You direct your question to the open Q&A forum here on RG and not to the RG support team. Scroll down on a page here on RG and click on Help center if you need additional info.
You can correct it yourself, please go to the page via your profile , then on the right hand, there is an option of edit, then as your paper published journal is not in RG list, try to omit it!
In case of a missing journal in RG's database, I add the bibliographic data to the abstract field (like, e.g., in https://www.researchgate.net/publication/344474227 and https://www.researchgate.net/publication/268925009).