to どんぐりキャノンさん

If you change the SETTING.TXT on the 杉浦 board to the following,
I think the level limit will be enabled without modifying bbs.cgi

■杉浦board
https://egg.5ch.net/sugiuraayano/SETTING.TXT

(Before)
BBS_FORCE_NOID=yes
BBS_FORCE_NONAME=yes

(After)
BBS_FORCE_NOID=
BBS_FORCE_NONAME=

※SETTING.TXT wiki
https://info.5ch.net/index.php/SETTING.TXT

※Reference SETTING. TXT
■その日暮らしboard
https://rio2016.5ch.net/okiraku/SETTING.TXT
BBS_FORCE_NOID=(no entry)
BBS_FORCE_NONAME=(no entry)

(Test log)
https://kes.5ch.net/test/read.cgi/donguri/1712976558/90
https://kes.5ch.net/test/read.cgi/donguri/1712976558/91