Major router manufacturers have well-documented default logins:
No major vendor uses cosmid. Therefore, "Cosmid Net" is likely: cosmid net password login 58
Review:
"The device functions as expected, but the default password 'login58' is dangerously weak — easily guessable. No two-factor authentication. Setup instructions were vague about changing the default. Works okay for non-sensitive use, but avoid using on any network with personal data. Strongly recommend resetting password and updating firmware if available." No major vendor uses cosmid
If you eventually log in, immediately: